# Commands covered: expr

 #

 # This file contains a collection of tests for one or more of the Tcl

 # built-in commands. Sourcing this file into Tcl runs the tests and

 # generates output for errors.  No output means no errors were found.

 #

 # Copyright (c) 1996-1997 Sun Microsystems, Inc.

 # Copyright (c) 1998-2000 by Scriptics Corporation.

 #

 # See the file "license.terms" for information on usage and redistribution

 # of this file, and for a DISCLAIMER OF ALL WARRANTIES.

 #

 # RCS: @(#) $Id: expr.test,v 1.17.2.12 2006/03/23 16:40:32 dgp Exp $

 if {[lsearch [namespace children] ::tcltest] == -1} {

     package require tcltest

     namespace import -force ::tcltest::*

 }

 testConstraint registeredMathFuncs [expr {

     ([catch {expr T1()} msg] != 1) || ($msg ne {unknown math function "T1"})

 }]

 testConstraint wideIs64bit [expr {(0x80000000 > 0) && (0x8000000000000000 < 0)}]

 # procedures used below

 proc put_hello_char {c} {

     global a

     append a [format %c $c]

     return $c

 }

 proc hello_world {} {

     global a

     set a ""

     set L1 [set l0 [set h_1 [set q 0]]]

     for {put_hello_char [expr [put_hello_char [expr [set h 7]*10+2]]+29]} {$l0?[put_hello_char $l0]

         :!$h_1} {put_hello_char $ll;expr {$L1==2?[set ll [expr 32+0-0+[set bar 0]]]:0}} {expr {[incr L1]==[expr 1+([string length "abc"]-[string length "abc"])]

         ?[set ll [set l0 [expr 54<<1]]]:$ll==108&&$L1<3?

         [incr ll [expr 1|1<<1]; set ll $ll; set ll $ll; set ll $ll; set ll $ll; set l0 [expr ([string length "abc"]-[string length "abc"])+([string length "abc"]-[string length "abc"])-([string length "abc"]-[string length "abc"])+([string length "abc"]-[string length "abc"])]; set l0; set l0 $l0; set l0; set l0]:$L1==4&&$ll==32?[set ll [expr 19+$h1+([string length "abc"]-[string length "abc"])-([string length "abc"]-[string length "abc"])+([string length "abc"]-[string length "abc"])-([string length "abc"]-[string length "abc"])+[set foo [expr ([string length "abc"]-[string length "abc"])+([string length "abc"]-[string length "abc"])+([string length "abc"]-[string length "abc"])]]]]

         :[set q [expr $q-$h1+([string length "abc"]-[string length "abc"])-([string length "abc"]-[string length "abc"])]]};expr {$L1==5?[incr ll -8; set ll $ll; set ll]:$q&&$h1&&1};expr {$L1==4+2

         ?[incr ll 3]:[expr ([string length "abc"]-[string length "abc"])+1]};expr {$ll==($h<<4)+2+0&&$L1!=6?[incr ll -6]:[set h1 [expr 100+([string length "abc"]-[string length "abc"])-([string length "abc"]-[string length "abc"])]]}

         expr {$L1!=1<<3?[incr q [expr ([string length "abc"]-[string length "abc"])-1]]:[set h_1 [set ll $h1]]}

     }

     set a

 }

 proc 12days {a b c} {

     global xxx

     expr {1<$a?[expr {$a<3?[12days -79 -13 [string range $c [12days -87 \

 	[expr 1-$b] [string range $c [12days -86 0 [string range $c 1 end]] \

 	end]] end]]:1};expr {$a<$b?[12days [expr $a+1] $b $c]:3};expr {[12days \

 	-94 [expr $a-27] $c]&&$a==2?$b<13?[12days 2 [expr $b+1] "%s %d %d\n"]:9

 	:16}]:$a<0?$a<-72?[12days $b $a "@n'+,#'/*\{\}w+/w#cdnr/+,\{\}r/*de\}+,/*\{*+,/w\{%+,/w#q#n+,/#\{l+,/n\{n+,/+#n+,/#;#q#n+,/+k#;*+,/'r :'d*'3,\}\{w+K w'K:'+\}e#';dq#'l q#'+d'K#!/+k#;q#'r\}eKK#\}w'r\}eKK\{nl\]'/#;#q#n')\{)#\}w')\{)\{nl\]'/+#n';d\}rw' i;# )\{nl\]!/n\{n#'; r\{#w'r nc\{nl\]'/#\{l,+'K \{rw' iK\{;\[\{nl\]'/w#q#n'wk nw' iwk\{KK\{nl\]!/w\{%'l##w#' i; :\{nl\]'/*\{q#'ld;r'\}\{nlwb!/*de\}'c ;;\{nl'-\{\}rw\]'/+,\}##'*\}#nc,',#nw\]'/+kd'+e\}+;#'rdq#w! nr'/ ') \}+\}\{rl#'\{n' ')# \}'+\}##(!!/"]

 	:$a<-50?[string compare [format %c $b] [string index $c 0]]==0?[append \

 	xxx [string index $c 31];scan [string index $c 31] %c x;set x]

 	:[12days -65 $b [string range $c 1 end]]:[12days [expr ([string compare \

 	[string index $c 0] "/"]==0)+$a] $b [string range $c 1 end]]:0<$a

 	?[12days 2 2 "%s"]:[string compare [string index $c 0] "/"]==0||

 	[12days 0 [12days -61 [scan [string index $c 0] %c x; set x] \

 	"!ek;dc i@bK'(q)-\[w\]*%n+r3#l,\{\}:\nuwloca-O;m .vpbks,fxntdCeghiry"] \

 	[string range $c 1 end]]}

 }

 proc do_twelve_days {} {

     global xxx

     set xxx ""

     12days 1 1 1

     string length $xxx

 }

 # start of tests

 catch {unset a b i x}

 test expr-1.1 {TclCompileExprCmd: no expression} {

     list [catch {expr  } msg] $msg

 } {1 {wrong # args: should be "expr arg ?arg ...?"}}

 test expr-1.2 {TclCompileExprCmd: one expression word} {

     expr -25

 } -25

 test expr-1.3 {TclCompileExprCmd: two expression words} {

     expr -8.2   -6

 } -14.2

 test expr-1.4 {TclCompileExprCmd: five expression words} {

     expr 20 - 5 +10 -7

 } 18

 test expr-1.5 {TclCompileExprCmd: quoted expression word} {

     expr "0005"

 } 5

 test expr-1.6 {TclCompileExprCmd: quoted expression word} {

     catch {expr "0005"zxy} msg

     set msg

 } {extra characters after close-quote}

 test expr-1.7 {TclCompileExprCmd: expression word in braces} {

     expr {-0005}

 } -5

 test expr-1.8 {TclCompileExprCmd: expression word in braces} {

     expr {{-0x1234}}

 } -4660

 test expr-1.9 {TclCompileExprCmd: expression word in braces} {

     catch {expr {-0005}foo} msg

     set msg

 } {extra characters after close-brace}

 test expr-1.10 {TclCompileExprCmd: other expression word in braces} {

     expr 4*[llength "6 2"]

 } 8

 test expr-1.11 {TclCompileExprCmd: expression word terminated by ;} {

     expr 4*[llength "6 2"];

 } 8

 test expr-1.12 {TclCompileExprCmd: inlined expr (in "catch") inside other catch} {

     set a xxx

     catch {

 	# Might not be a number

 	set a [expr 10*$a]

     }

 } 1

 test expr-1.13 {TclCompileExprCmd: second level of substitutions in expr not in braces with single var reference} {

     set a xxx

     set x 27;  set bool {$x};  if $bool {set a foo}

     set a

 } foo

 test expr-1.14 {TclCompileExprCmd: second level of substitutions in expr with comparison as top-level operator} {

     set a xxx

     set x 2;  set b {$x};  set a [expr $b == 2]

     set a

 } 1

 test expr-1.15 {TclCompileExprCmd: second level of substitutions in expr with comparison as top-level operator} {

     set a xxx

     set x 2;  set b {$x};  set a [expr $b eq 2]

     set a

 } 1

 test expr-2.1 {TclCompileExpr: are builtin functions registered?} {

     expr double(5*[llength "6 2"])

 } 10.0

 test expr-2.2 {TclCompileExpr: error in expr} {

     catch {expr 2**3} msg

     set msg

 } {syntax error in expression "2**3": unexpected operator *}

 test expr-2.3 {TclCompileExpr: junk after legal expr} {

     catch {expr 7*[llength "a b"]foo} msg

     set msg

 } {syntax error in expression "7*2foo": extra tokens at end of expression}

 test expr-2.4 {TclCompileExpr: numeric expr string rep == formatted int rep} {

     expr {0001}

 } 1

 test expr-3.1 {CompileCondExpr: just lor expr} {expr 3||0} 1

 test expr-3.2 {CompileCondExpr: error in lor expr} {

     catch {expr x||3} msg

     set msg

 } {syntax error in expression "x||3": variable references require preceding $}

 test expr-3.3 {CompileCondExpr: test true arm} {expr 3>2?44:66} 44

 test expr-3.4 {CompileCondExpr: error compiling true arm} {

     catch {expr 3>2?2**3:66} msg

     set msg

 } {syntax error in expression "3>2?2**3:66": unexpected operator *}

 test expr-3.5 {CompileCondExpr: test false arm} {expr 2>3?44:66} 66

 test expr-3.6 {CompileCondExpr: error compiling false arm} {

     catch {expr 2>3?44:2**3} msg

     set msg

 } {syntax error in expression "2>3?44:2**3": unexpected operator *}

 test expr-3.7 {CompileCondExpr: long arms & nested cond exprs} {unixOnly nonPortable} {

     puts "Note: doing test expr-3.7 which can take several minutes to run"

     hello_world

 } {Hello world}

 catch {unset xxx}

 test expr-3.8 {CompileCondExpr: long arms & nested cond exprs} {unixOnly nonPortable} {

     puts "Note: doing test expr-3.8 which can take several minutes to run"

     do_twelve_days

 } 2358

 catch {unset xxx}

 test expr-4.1 {CompileLorExpr: just land expr} {expr 1.3&&3.3} 1

 test expr-4.2 {CompileLorExpr: error in land expr} {

     catch {expr x&&3} msg

     set msg

 } {syntax error in expression "x&&3": variable references require preceding $} 

 test expr-4.3 {CompileLorExpr: simple lor exprs} {expr 0||1.0} 1

 test expr-4.4 {CompileLorExpr: simple lor exprs} {expr 3.0||0.0} 1

 test expr-4.5 {CompileLorExpr: simple lor exprs} {expr 0||0||1} 1

 test expr-4.6 {CompileLorExpr: error compiling lor arm} {

     catch {expr 2**3||4.0} msg

     set msg

 } {syntax error in expression "2**3||4.0": unexpected operator *}

 test expr-4.7 {CompileLorExpr: error compiling lor arm} {

     catch {expr 1.3||2**3} msg

     set msg

 } {syntax error in expression "1.3||2**3": unexpected operator *}

 test expr-4.8 {CompileLorExpr: error compiling lor arms} {

     list [catch {expr {"a"||"b"}} msg] $msg

 } {1 {expected boolean value but got "a"}}

 test expr-4.9 {CompileLorExpr: long lor arm} {

     set a "abcdefghijkl"

     set i 7

     expr {[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]] || [string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]] || [string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]] || [string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]&&[string compare [format %c $i] [string index $a $i]]}

 } 1

 test expr-5.1 {CompileLandExpr: just bitor expr} {expr 7|0x13} 23

 test expr-5.2 {CompileLandExpr: error in bitor expr} {

     catch {expr x|3} msg

     set msg

 } {syntax error in expression "x|3": variable references require preceding $} 

 test expr-5.3 {CompileLandExpr: simple land exprs} {expr 0&&1.0} 0

 test expr-5.4 {CompileLandExpr: simple land exprs} {expr 0&&0} 0

 test expr-5.5 {CompileLandExpr: simple land exprs} {expr 3.0&&1.2} 1

 test expr-5.6 {CompileLandExpr: simple land exprs} {expr 1&&1&&2} 1

 test expr-5.7 {CompileLandExpr: error compiling land arm} {

     catch {expr 2**3&&4.0} msg

     set msg

 } {syntax error in expression "2**3&&4.0": unexpected operator *}

 test expr-5.8 {CompileLandExpr: error compiling land arm} {

     catch {expr 1.3&&2**3} msg

     set msg

 } {syntax error in expression "1.3&&2**3": unexpected operator *}

 test expr-5.9 {CompileLandExpr: error compiling land arm} {

     list [catch {expr {"a"&&"b"}} msg] $msg

 } {1 {expected boolean value but got "a"}}

 test expr-5.10 {CompileLandExpr: long land arms} {

     set a "abcdefghijkl"

     set i 7

     expr {[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]] && [string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]] && [string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]] && [string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]^[string compare [format %c 103] [string index $a $i]]^[string compare [format %c 105] [string index $a $i]]}

 } 1

 test expr-6.1 {CompileBitXorExpr: just bitand expr} {expr 7&0x13} 3

 test expr-6.2 {CompileBitXorExpr: error in bitand expr} {

     catch {expr x|3} msg

     set msg

 } {syntax error in expression "x|3": variable references require preceding $} 

 test expr-6.3 {CompileBitXorExpr: simple bitxor exprs} {expr 7^0x13} 20

 test expr-6.4 {CompileBitXorExpr: simple bitxor exprs} {expr 3^0x10} 19

 test expr-6.5 {CompileBitXorExpr: simple bitxor exprs} {expr 0^7} 7

 test expr-6.6 {CompileBitXorExpr: simple bitxor exprs} {expr -1^7} -8

 test expr-6.7 {CompileBitXorExpr: error compiling bitxor arm} {

     catch {expr 2**3|6} msg

     set msg

 } {syntax error in expression "2**3|6": unexpected operator *}

 test expr-6.8 {CompileBitXorExpr: error compiling bitxor arm} {

     catch {expr 2^x} msg

     set msg

 } {syntax error in expression "2^x": variable references require preceding $}

 test expr-6.9 {CompileBitXorExpr: runtime error in bitxor arm} {

     list [catch {expr {24.0^3}} msg] $msg

 } {1 {can't use floating-point value as operand of "^"}}

 test expr-6.10 {CompileBitXorExpr: runtime error in bitxor arm} {

     list [catch {expr {"a"^"b"}} msg] $msg

 } {1 {can't use non-numeric string as operand of "^"}}

 test expr-7.1 {CompileBitAndExpr: just equality expr} {expr 3==2} 0

 test expr-7.2 {CompileBitAndExpr: just equality expr} {expr 2.0==2} 1

 test expr-7.3 {CompileBitAndExpr: just equality expr} {expr 3.2!=2.2} 1

 test expr-7.4 {CompileBitAndExpr: just equality expr} {expr {"abc" == "abd"}} 0

 test expr-7.5 {CompileBitAndExpr: error in equality expr} {

     catch {expr x==3} msg

     set msg

 } {syntax error in expression "x==3": variable references require preceding $}

 test expr-7.6 {CompileBitAndExpr: simple bitand exprs} {expr 7&0x13} 3

 test expr-7.7 {CompileBitAndExpr: simple bitand exprs} {expr 0xf2&0x53} 82

 test expr-7.8 {CompileBitAndExpr: simple bitand exprs} {expr 3&6} 2

 test expr-7.9 {CompileBitAndExpr: simple bitand exprs} {expr -1&-7} -7

 test expr-7.10 {CompileBitAndExpr: error compiling bitand arm} {

     catch {expr 2**3&6} msg

     set msg

 } {syntax error in expression "2**3&6": unexpected operator *}

 test expr-7.11 {CompileBitAndExpr: error compiling bitand arm} {

     catch {expr 2&x} msg

     set msg

 } {syntax error in expression "2&x": variable references require preceding $}

 test expr-7.12 {CompileBitAndExpr: runtime error in bitand arm} {

     list [catch {expr {24.0&3}} msg] $msg

 } {1 {can't use floating-point value as operand of "&"}}

 test expr-7.13 {CompileBitAndExpr: runtime error in bitand arm} {

     list [catch {expr {"a"&"b"}} msg] $msg

 } {1 {can't use non-numeric string as operand of "&"}}

 test expr-7.14 {CompileBitAndExpr: equality expr} {expr 3eq2} 0

 test expr-7.18 {CompileBitAndExpr: equality expr} {expr {"abc" eq "abd"}} 0

 test expr-7.20 {CompileBitAndExpr: error in equality expr} {

     catch {expr xne3} msg

     set msg

 } {syntax error in expression "xne3": variable references require preceding $} 

 test expr-8.1 {CompileEqualityExpr: just relational expr} {expr 3>=2} 1

 test expr-8.2 {CompileEqualityExpr: just relational expr} {expr 2<=2.1} 1

 test expr-8.3 {CompileEqualityExpr: just relational expr} {expr 3.2>"2.2"} 1

 test expr-8.4 {CompileEqualityExpr: just relational expr} {expr {"0y"<"0x12"}} 0

 test expr-8.5 {CompileEqualityExpr: error in relational expr} {

     catch {expr x>3} msg

     set msg

 } {syntax error in expression "x>3": variable references require preceding $}

 test expr-8.6 {CompileEqualityExpr: simple equality exprs} {expr 7==0x13} 0

 test expr-8.7 {CompileEqualityExpr: simple equality exprs} {expr -0xf2!=0x53} 1

 test expr-8.8 {CompileEqualityExpr: simple equality exprs} {expr {"12398712938788234-1298379" != ""}} 1

 test expr-8.9 {CompileEqualityExpr: simple equality exprs} {expr -1!="abc"} 1

 test expr-8.10 {CompileEqualityExpr: error compiling equality arm} {

     catch {expr 2**3==6} msg

     set msg

 } {syntax error in expression "2**3==6": unexpected operator *}

 test expr-8.11 {CompileEqualityExpr: error compiling equality arm} {

     catch {expr 2!=x} msg

     set msg

 } {syntax error in expression "2!=x": variable references require preceding $}

 test expr-8.12 {CompileBitAndExpr: equality expr} {expr {"a"eq"a"}} 1

 test expr-8.13 {CompileBitAndExpr: equality expr} {expr {"\374" eq "ü"}} 1

 test expr-8.14 {CompileBitAndExpr: equality expr} {expr 3eq2} 0

 test expr-8.15 {CompileBitAndExpr: equality expr} {expr 2.0eq2} 0

 test expr-8.16 {CompileBitAndExpr: equality expr} {expr 3.2ne2.2} 1

 test expr-8.17 {CompileBitAndExpr: equality expr} {expr 01eq1} 0

 test expr-8.18 {CompileBitAndExpr: equality expr} {expr {"abc" eq "abd"}} 0

 test expr-8.19 {CompileBitAndExpr: equality expr} {expr {"abc" ne "abd"}} 1

 test expr-8.20 {CompileBitAndExpr: error in equality expr} {

     catch {expr x ne3} msg

     set msg

 } {syntax error in expression "x ne3": variable references require preceding $} 

 test expr-8.21 {CompileBitAndExpr: error in equality expr} {

     # These should be ""ed to avoid the error

     catch {expr a eq b} msg

     set msg

 } {syntax error in expression "a eq b": variable references require preceding $}

 test expr-9.1 {CompileRelationalExpr: just shift expr} {expr 3<<2} 12

 test expr-9.2 {CompileRelationalExpr: just shift expr} {expr 0xff>>2} 63

 test expr-9.3 {CompileRelationalExpr: just shift expr} {expr -1>>2} -1

 test expr-9.4 {CompileRelationalExpr: just shift expr} {expr {1<<3}} 8

 # The following test is different for 32-bit versus 64-bit

 # architectures because LONG_MIN is different

 if {0x80000000 > 0} {

     test expr-9.5 {CompileRelationalExpr: shift expr producing LONG_MIN} {nonPortable} {

 	expr {1<<63}

     } -9223372036854775808

 } else {

     test expr-9.5 {CompileRelationalExpr: shift expr producing LONG_MIN} {nonPortable} {

 	expr {1<<31}

     } -2147483648

 }

 test expr-9.6 {CompileRelationalExpr: error in shift expr} {

     catch {expr x>>3} msg

     set msg

 } {syntax error in expression "x>>3": variable references require preceding $}

 test expr-9.7 {CompileRelationalExpr: simple relational exprs} {expr 0xff>=+0x3} 1

 test expr-9.8 {CompileRelationalExpr: simple relational exprs} {expr -0xf2<0x3} 1

 test expr-9.9 {CompileRelationalExpr: error compiling relational arm} {

     catch {expr 2**3>6} msg

     set msg

 } {syntax error in expression "2**3>6": unexpected operator *}

 test expr-9.10 {CompileRelationalExpr: error compiling relational arm} {

     catch {expr 2<x} msg

     set msg

 } {syntax error in expression "2<x": variable references require preceding $}

 test expr-10.1 {CompileShiftExpr: just add expr} {expr 4+-2} 2

 test expr-10.2 {CompileShiftExpr: just add expr} {expr 0xff-2} 253

 test expr-10.3 {CompileShiftExpr: just add expr} {expr -1--2} 1

 test expr-10.4 {CompileShiftExpr: just add expr} {expr 1-0123} -82

 test expr-10.5 {CompileShiftExpr: error in add expr} {

     catch {expr x+3} msg

     set msg

 } {syntax error in expression "x+3": variable references require preceding $}

 test expr-10.6 {CompileShiftExpr: simple shift exprs} {expr 0xff>>0x3} 31

 test expr-10.7 {CompileShiftExpr: simple shift exprs} {expr -0xf2<<0x3} -1936

 test expr-10.8 {CompileShiftExpr: error compiling shift arm} {

     catch {expr 2**3>>6} msg

     set msg

 } {syntax error in expression "2**3>>6": unexpected operator *}

 test expr-10.9 {CompileShiftExpr: error compiling shift arm} {

     catch {expr 2<<x} msg

     set msg

 } {syntax error in expression "2<<x": variable references require preceding $}

 test expr-10.10 {CompileShiftExpr: runtime error} {

     list [catch {expr {24.0>>43}} msg] $msg

 } {1 {can't use floating-point value as operand of ">>"}}

 test expr-10.11 {CompileShiftExpr: runtime error} {

     list [catch {expr {"a"<<"b"}} msg] $msg

 } {1 {can't use non-numeric string as operand of "<<"}}

 test expr-11.1 {CompileAddExpr: just multiply expr} {expr 4*-2} -8

 test expr-11.2 {CompileAddExpr: just multiply expr} {expr 0xff%2} 1

 test expr-11.3 {CompileAddExpr: just multiply expr} {expr -1/2} -1

 test expr-11.4 {CompileAddExpr: just multiply expr} {expr 7891%0123} 6

 test expr-11.5 {CompileAddExpr: error in multiply expr} {

     catch {expr x*3} msg

     set msg

 } {syntax error in expression "x*3": variable references require preceding $}

 test expr-11.6 {CompileAddExpr: simple add exprs} {expr 0xff++0x3} 258

 test expr-11.7 {CompileAddExpr: simple add exprs} {expr -0xf2--0x3} -239

 test expr-11.8 {CompileAddExpr: error compiling add arm} {

     catch {expr 2**3+6} msg

     set msg

 } {syntax error in expression "2**3+6": unexpected operator *}

 test expr-11.9 {CompileAddExpr: error compiling add arm} {

     catch {expr 2-x} msg

     set msg

 } {syntax error in expression "2-x": variable references require preceding $}

 test expr-11.10 {CompileAddExpr: runtime error} {

     list [catch {expr {24.0+"xx"}} msg] $msg

 } {1 {can't use non-numeric string as operand of "+"}}

 test expr-11.11 {CompileAddExpr: runtime error} {

     list [catch {expr {"a"-"b"}} msg] $msg

 } {1 {can't use non-numeric string as operand of "-"}}

 test expr-11.12 {CompileAddExpr: runtime error} {

     list [catch {expr {3/0}} msg] $msg

 } {1 {divide by zero}}

 test expr-11.13 {CompileAddExpr: runtime error} {

     list [catch {expr {2.3/0.0}} msg] $msg

 } {1 {divide by zero}}

 test expr-12.1 {CompileMultiplyExpr: just unary expr} {expr ~4} -5

 test expr-12.2 {CompileMultiplyExpr: just unary expr} {expr --5} 5

 test expr-12.3 {CompileMultiplyExpr: just unary expr} {expr !27} 0

 test expr-12.4 {CompileMultiplyExpr: just unary expr} {expr ~0xff00ff} -16711936

 test expr-12.5 {CompileMultiplyExpr: error in unary expr} {

     catch {expr ~x} msg

     set msg

 } {syntax error in expression "~x": variable references require preceding $}

 test expr-12.6 {CompileMultiplyExpr: simple multiply exprs} {expr 0xff*0x3} 765

 test expr-12.7 {CompileMultiplyExpr: simple multiply exprs} {expr -0xf2%-0x3} -2

 test expr-12.8 {CompileMultiplyExpr: error compiling multiply arm} {

     catch {expr 2*3%%6} msg

     set msg

 } {syntax error in expression "2*3%%6": unexpected operator %}

 test expr-12.9 {CompileMultiplyExpr: error compiling multiply arm} {

     catch {expr 2*x} msg

     set msg

 } {syntax error in expression "2*x": variable references require preceding $}

 test expr-12.10 {CompileMultiplyExpr: runtime error} {

     list [catch {expr {24.0*"xx"}} msg] $msg

 } {1 {can't use non-numeric string as operand of "*"}}

 test expr-12.11 {CompileMultiplyExpr: runtime error} {

     list [catch {expr {"a"/"b"}} msg] $msg

 } {1 {can't use non-numeric string as operand of "/"}}

 test expr-13.1 {CompileUnaryExpr: unary exprs} {expr -0xff} -255

 test expr-13.2 {CompileUnaryExpr: unary exprs} {expr +000123} 83

 test expr-13.3 {CompileUnaryExpr: unary exprs} {expr +--++36} 36

 test expr-13.4 {CompileUnaryExpr: unary exprs} {expr !2} 0

 test expr-13.5 {CompileUnaryExpr: unary exprs} {expr +--+-62.0} -62.0

 test expr-13.6 {CompileUnaryExpr: unary exprs} {expr !0.0} 1

 test expr-13.7 {CompileUnaryExpr: unary exprs} {expr !0xef} 0

 test expr-13.8 {CompileUnaryExpr: error compiling unary expr} {

     catch {expr ~x} msg

     set msg

 } {syntax error in expression "~x": variable references require preceding $}

 test expr-13.9 {CompileUnaryExpr: error compiling unary expr} {

     catch {expr !1.x} msg

     set msg

 } {syntax error in expression "!1.x": extra tokens at end of expression}

 test expr-13.10 {CompileUnaryExpr: runtime error} {

     list [catch {expr {~"xx"}} msg] $msg

 } {1 {can't use non-numeric string as operand of "~"}}

 test expr-13.11 {CompileUnaryExpr: runtime error} {

     list [catch {expr ~4.0} msg] $msg

 } {1 {can't use floating-point value as operand of "~"}}

 test expr-13.12 {CompileUnaryExpr: just primary expr} {expr 0x123} 291

 test expr-13.13 {CompileUnaryExpr: just primary expr} {

     set a 27

     expr $a

 } 27

 test expr-13.14 {CompileUnaryExpr: just primary expr} {

     expr double(27)

 } 27.0

 test expr-13.15 {CompileUnaryExpr: just primary expr} {expr "123"} 123

 test expr-13.16 {CompileUnaryExpr: error in primary expr} {

     catch {expr [set]} msg

     set msg

 } {wrong # args: should be "set varName ?newValue?"}

 test expr-13.17 {CompileUnaryExpr: negating non-numeric boolean literals} {

     set a1 yes; set a0 no; set b1 true; set b0 false

     list [expr {!$a1}] [expr {!$a0}] [expr {!$b1}] [expr {!$b0}]

 } {0 1 0 1}

 test expr-14.1 {CompilePrimaryExpr: literal primary} {expr 1} 1

 test expr-14.2 {CompilePrimaryExpr: literal primary} {expr 123} 123

 test expr-14.3 {CompilePrimaryExpr: literal primary} {expr 0xff} 255

 test expr-14.4 {CompilePrimaryExpr: literal primary} {expr 00010} 8

 test expr-14.5 {CompilePrimaryExpr: literal primary} {expr 62.0} 62.0

 test expr-14.6 {CompilePrimaryExpr: literal primary} {

     expr 3.1400000

 } 3.14

 test expr-14.7 {CompilePrimaryExpr: literal primary} {expr {{abcde}<{abcdef}}} 1

 test expr-14.8 {CompilePrimaryExpr: literal primary} {expr {{abc\

 def} < {abcdef}}} 1

 test expr-14.9 {CompilePrimaryExpr: literal primary} {expr {{abc\tde} > {abc\tdef}}} 0

 test expr-14.10 {CompilePrimaryExpr: literal primary} {expr {{123}}} 123

 test expr-14.11 {CompilePrimaryExpr: var reference primary} {

     set i 789

     list [expr {$i}] [expr $i]

 } {789 789}

 test expr-14.12 {CompilePrimaryExpr: var reference primary} {

     set i {789}    ;# test expr's aggressive conversion to numeric semantics

     list [expr {$i}] [expr $i]

 } {789 789}

 test expr-14.13 {CompilePrimaryExpr: var reference primary} {

     catch {unset a}

     set a(foo) foo

     set a(bar) bar

     set a(123) 123

     set result ""

     lappend result [expr $a(123)] [expr {$a(bar)<$a(foo)}]

     catch {unset a}

     set result

 } {123 1}

 test expr-14.14 {CompilePrimaryExpr: var reference primary} {

     set i 123    ;# test "$var.0" floating point conversion hack

     list [expr $i] [expr $i.0] [expr $i.0/12.0]

 } {123 123.0 10.25}

 test expr-14.15 {CompilePrimaryExpr: var reference primary} {

     set i 123

     catch {expr $i.2} msg

     set msg

 } 123.2

 test expr-14.16 {CompilePrimaryExpr: error compiling var reference primary} {

     catch {expr {$a(foo}} msg

     set errorInfo

 } {missing )

     while compiling

 "expr {$a(foo}"}

 test expr-14.17 {CompilePrimaryExpr: string primary that looks like var ref} {

     expr $

 } $

 test expr-14.18 {CompilePrimaryExpr: quoted string primary} {

     expr "21"

 } 21

 test expr-14.19 {CompilePrimaryExpr: quoted string primary} {

     set i 123

     set x 456

     expr "$i+$x"

 } 579

 test expr-14.20 {CompilePrimaryExpr: quoted string primary} {

     set i 3

     set x 6

     expr 2+"$i.$x"

 } 5.6

 test expr-14.21 {CompilePrimaryExpr: error in quoted string primary} {

     catch {expr "[set]"} msg

     set msg

 } {wrong # args: should be "set varName ?newValue?"}

 test expr-14.22 {CompilePrimaryExpr: subcommand primary} {

     expr {[set i 123; set i]}

 } 123

 test expr-14.23 {CompilePrimaryExpr: error in subcommand primary} {

     catch {expr {[set]}} msg

     set errorInfo

 } {wrong # args: should be "set varName ?newValue?"

     while compiling

 "set"

     while compiling

 "expr {[set]}"}

 test expr-14.24 {CompilePrimaryExpr: error in subcommand primary} {

     catch {expr {[set i}} msg

     set errorInfo

 } {missing close-bracket

     while compiling

 "expr {[set i}"}

 test expr-14.25 {CompilePrimaryExpr: math function primary} {

     format %.6g [expr exp(1.0)]

 } 2.71828

 test expr-14.26 {CompilePrimaryExpr: math function primary} {

     format %.6g [expr pow(2.0+0.1,3.0+0.1)]

 } 9.97424

 test expr-14.27 {CompilePrimaryExpr: error in math function primary} {

     catch {expr sinh::(2.0)} msg

     set errorInfo

 } {syntax error in expression "sinh::(2.0)": expected parenthesis enclosing function arguments

     while compiling

 "expr sinh::(2.0)"}

 test expr-14.28 {CompilePrimaryExpr: subexpression primary} {

     expr 2+(3*4)

 } 14

 test expr-14.29 {CompilePrimaryExpr: error in subexpression primary} {

     catch {expr 2+(3*[set])} msg

     set errorInfo

 } {wrong # args: should be "set varName ?newValue?"

     while compiling

 "set"

     while compiling

 "expr 2+(3*[set])"}

 test expr-14.30 {CompilePrimaryExpr: missing paren in subexpression primary} {

     catch {expr 2+(3*(4+5)} msg

     set errorInfo

 } {syntax error in expression "2+(3*(4+5)": looking for close parenthesis

     while compiling

 "expr 2+(3*(4+5)"}

 test expr-14.31 {CompilePrimaryExpr: just var ref in subexpression primary} {

     set i "5+10"

     list "[expr $i] == 15" "[expr ($i)] == 15" "[eval expr ($i)] == 15"

 } {{15 == 15} {15 == 15} {15 == 15}}

 test expr-14.32 {CompilePrimaryExpr: unexpected token} {

     catch {expr @} msg

     set errorInfo

 } {syntax error in expression "@": character not legal in expressions

     while compiling

 "expr @"}

 test expr-15.1 {CompileMathFuncCall: missing parenthesis} {

     catch {expr sinh2.0)} msg

     set errorInfo

 } {syntax error in expression "sinh2.0)": variable references require preceding $

     while compiling

 "expr sinh2.0)"}

 test expr-15.2 {CompileMathFuncCall: unknown math function} {

     catch {expr whazzathuh(1)} msg

     set errorInfo

 } {unknown math function "whazzathuh"

     while compiling

 "expr whazzathuh(1)"}

 test expr-15.3 {CompileMathFuncCall: too many arguments} {

     catch {expr sin(1,2,3)} msg

     set errorInfo

 } {too many arguments for math function

     while compiling

 "expr sin(1,2,3)"}

 test expr-15.4 {CompileMathFuncCall: ')' found before last required arg} {

     catch {expr sin()} msg

     set errorInfo

 } {too few arguments for math function

     while compiling

 "expr sin()"}

 test expr-15.5 {CompileMathFuncCall: too few arguments} {

     catch {expr pow(1)} msg

     set errorInfo

 } {too few arguments for math function

     while compiling

 "expr pow(1)"}

 test expr-15.6 {CompileMathFuncCall: missing ')'} {

     catch {expr sin(1} msg

     set errorInfo

 } {syntax error in expression "sin(1": missing close parenthesis at end of function call

     while compiling

 "expr sin(1"}

 test expr-15.7 {CompileMathFuncCall: call registered math function} {registeredMathFuncs} {

     expr 2*T1()

 } 246

 test expr-15.8 {CompileMathFuncCall: call registered math function} {registeredMathFuncs} {

     expr T2()*3

 } 1035

 test expr-15.9 {CompileMathFuncCall: call registered math function} {registeredMathFuncs} {

     expr T3(21, 37)

 } 37

 test expr-15.10 {CompileMathFuncCall: call registered math function} {registeredMathFuncs} {

     expr T3(21.2, 37)

 } 37.0

 test expr-15.11 {CompileMathFuncCall: call registered math function} {registeredMathFuncs} {

     expr T3(-21.2, -17.5)

 } -17.5

 test expr-15.12 {ExprCallMathFunc: call registered math function} {registeredMathFuncs} {

     expr T3(21, wide(37))

 } 37

 test expr=15.13 {ExprCallMathFunc: call registered math function} {registeredMathFuncs} {

     expr T3(wide(21), 37)

 } 37

 test expr=15.14 {ExprCallMathFunc: call registered math function} {registeredMathFuncs} {

     expr T3(wide(21), wide(37))

 } 37

 test expr-15.15 {ExprCallMathFunc: call registered math function} {registeredMathFuncs} {

     expr T3(21.0, wide(37))

 } 37.0

 test expr=15.16 {ExprCallMathFunc: call registered math function} {registeredMathFuncs} {

     expr T3(wide(21), 37.0)

 } 37.0

 test expr-16.1 {GetToken: checks whether integer token starting with "0x" (e.g., "0x$") is invalid} {

     catch {unset a}

     set a(VALUE) ff15

     set i 123

     if {[expr 0x$a(VALUE)] & 16} {

         set i {}

     }

     set i

 } {}

 test expr-16.2 {GetToken: check for string literal in braces} {

     expr {{1}}

 } {1}

 # Check "expr" and computed command names.

 test expr-17.1 {expr and computed command names} {

     set i 0

     set z expr

     $z 1+2

 } 3

 # Check correct conversion of operands to numbers: If the string looks like

 # an integer, convert to integer. Otherwise, if the string looks like a

 # double, convert to double.

 test expr-18.1 {expr and conversion of operands to numbers} {

     set x [lindex 11 0]

     catch {expr int($x)}

     expr {$x}

 } 11

 test expr-18.2 {whitespace strings should not be == 0 (buggy strtod)} {

     expr {" "}

 } { }

 # Check "expr" and interpreter result object resetting before appending

 # an error msg during evaluation of exprs not in {}s

 test expr-19.1 {expr and interpreter result object resetting} {

     proc p {} {

         set t  10.0

         set x  2.0

         set dx 0.2

         set f  {$dx-$x/10}

         set g  {-$x/5}

         set center 1.0

         set x  [expr $x-$center]

         set dx [expr $dx+$g]

         set x  [expr $x+$f+$center]

         set x  [expr $x+$f+$center]

         set y  [expr round($x)]

     }

     p

 } 3

 # Test for incorrect "double evaluation" semantics

 test expr-20.1 {wrong brace matching} {

     catch {unset l}

     catch {unset r}

     catch {unset q}

     catch {unset cmd}

     catch {unset a}

     set l "\{"; set r "\}"; set q "\""

     set cmd "expr $l$q|$q == $q$r$q$r"

     list [catch $cmd a] $a

 } {1 {extra characters after close-brace}}

 test expr-20.2 {double invocation of variable traces} {

     set exprtracecounter 0

     proc exprtraceproc {args} {

        upvar #0 exprtracecounter counter

        set argc [llength $args]

        set extraargs [lrange $args 0 [expr {$argc - 4}]]

        set name [lindex $args [expr {$argc - 3}]]

        upvar 1 $name var

        if {[incr counter] % 2 == 1} {

            set var "$counter oops [concat $extraargs]"

        } else {

            set var "$counter + [concat $extraargs]"

        }

     }

     trace variable exprtracevar r [list exprtraceproc 10]

     list [catch {expr "$exprtracevar + 20"} a] $a \

         [catch {expr "$exprtracevar + 20"} b] $b \

         [unset exprtracevar exprtracecounter]

 } {1 {syntax error in expression "1 oops 10 + 20": extra tokens at end of expression} 0 32 {}}

 test expr-20.3 {broken substitution of integer digits} {

     # fails with 8.0.x, but not 8.1b2

     list [set a 000; expr 0x1$a] [set a 1; expr ${a}000]

 } {4096 1000}

 test expr-20.4 {proper double evaluation compilation, error case} {

     catch {unset a}; # make sure $a doesn't exist

     list [catch {expr 1?{$a}:0} msg] $msg

 } {1 {can't read "a": no such variable}}

 test expr-20.5 {proper double evaluation compilation, working case} {

     set a yellow

     expr 1?{$a}:0

 } yellow

 test expr-20.6 {handling of compile error in trial compile} {

     list [catch {expr + {[incr]}} msg] $msg

 } {1 {wrong # args: should be "incr varName ?increment?"}}

 test expr-20.7 {handling of compile error in runtime case} {

     list [catch {expr + {[error foo]}} msg] $msg

 } {1 foo}

 # Test for non-numeric boolean literal handling

 test expr-21.1 	{non-numeric boolean literals} {expr false } false

 test expr-21.2 	{non-numeric boolean literals} {expr true  } true

 test expr-21.3 	{non-numeric boolean literals} {expr off   } off

 test expr-21.4 	{non-numeric boolean literals} {expr on    } on

 test expr-21.5 	{non-numeric boolean literals} {expr no    } no

 test expr-21.6 	{non-numeric boolean literals} {expr yes   } yes

 test expr-21.7 	{non-numeric boolean literals} {expr !false} 1

 test expr-21.8 	{non-numeric boolean literals} {expr !true } 0

 test expr-21.9 	{non-numeric boolean literals} {expr !off  } 1

 test expr-21.10 {non-numeric boolean literals} {expr !on   } 0

 test expr-21.11 {non-numeric boolean literals} {expr !no   } 1

 test expr-21.12 {non-numeric boolean literals} {expr !yes  } 0

 # Test for non-numeric float handling.

 #

 # These are non-portable because strtod()-support for "Inf" and "NaN"

 # is so wildly variable.  This sucks...

 test expr-22.1 {non-numeric floats} nonPortable {

     list [catch {expr {NaN + 1}} msg] $msg

 } {1 {can't use non-numeric floating-point value as operand of "+"}}

 test expr-22.2 {non-numeric floats} nonPortable {

     list [catch {expr {Inf + 1}} msg] $msg

 } {1 {can't use infinite floating-point value as operand of "+"}}

 test expr-22.3 {non-numeric floats} nonPortable {

     set nan NaN

     list [catch {expr {$nan + 1}} msg] $msg

 } {1 {can't use non-numeric floating-point value as operand of "+"}}

 test expr-22.4 {non-numeric floats} nonPortable {

     set inf Inf

     list [catch {expr {$inf + 1}} msg] $msg

 } {1 {can't use infinite floating-point value as operand of "+"}}

 test expr-22.5 {non-numeric floats} nonPortable {

     list [catch {expr NaN} msg] $msg

 } {1 {domain error: argument not in valid range}}

 test expr-22.6 {non-numeric floats} nonPortable {

     list [catch {expr Inf} msg] $msg

 } {1 {floating-point value too large to represent}}

 test expr-22.7 {non-numeric floats} nonPortable {

     list [catch {expr {1 / NaN}} msg] $msg

 } {1 {can't use non-numeric floating-point value as operand of "/"}}

 test expr-22.8 {non-numeric floats} nonPortable {

     list [catch {expr {1 / Inf}} msg] $msg

 } {1 {can't use infinite floating-point value as operand of "/"}}

 # Make sure [Bug 761471] stays fixed.

 test expr-22.9 {non-numeric floats: shared object equality and NaN} nonPortable {

     set x NaN

     expr {$x == $x}

 } 0

 # Some compilers get this wrong; ensure that we work around it correctly

 test expr-24.1 {expr edge cases; shifting} {expr int(5)>>31} 0

 test expr-24.2 {expr edge cases; shifting} {expr int(5)>>63} 0

 test expr-24.3 {expr edge cases; shifting} {expr wide(5)>>31} 0

 test expr-24.4 {expr edge cases; shifting} {expr wide(5)>>63} 0

 test expr-24.5 {expr edge cases; shifting} nonPortable {expr int(5)<<31} 0

 test expr-24.6 {expr edge cases; shifting} nonPortable {expr int(5)<<63} 0

 test expr-24.7 {expr edge cases; shifting} {expr wide(5)<<31} 10737418240

 test expr-24.8 {expr edge cases; shifting} nonPortable {expr wide(5)<<63} -9223372036854775808

 test expr-24.9 {expr edge cases; shifting} {expr 5>>32} 0

 test expr-38.1 {abs of smallest 32-bit integer [Bug 1241572]} {wideIs64bit} {

     expr {abs(int(-2147483648))}

 } 2147483648

 test expr-46.1 {round() rounds to +-infinity} {

     expr round(0.5)

 } 1

 test expr-46.2 {round() rounds to +-infinity} {

     expr round(1.5)

 } 2

 test expr-46.3 {round() rounds to +-infinity} {

     expr round(-0.5)

 } -1

 test expr-46.4 {round() rounds to +-infinity} {

     expr round(-1.5)

 } -2

 test expr-46.5 {round() overflow} {

     list [catch {expr round(9.2233720368547758e+018)} result] $result

 } {1 {integer value too large to represent}}

 test expr-46.6 {round() overflow} {

     list [catch {expr round(-9.2233720368547758e+018)} result] $result

 } {1 {integer value too large to represent}}

 test expr-46.7 {round() bad value} {

     set x trash

     list [catch {expr {round($x)}} result] $result

 } {1 {argument to math function didn't have numeric value}}

 test expr-46.8 {round() already an integer} {

     set x 123456789012

     incr x

     expr round($x)

 } 123456789013

 test expr-46.9 {round() boundary case - 1/2 - 1 ulp} {

     set x 0.25

     set bit 0.125

     while 1 {

 	set newx [expr {$x + $bit}]

 	if { $newx == $x || $newx == 0.5 } break

 	set x $newx

 	set bit [expr { $bit / 2.0 }]

     }

     expr {round($x)}

 } 0

 test expr-46.10 {round() boundary case - 1/2 + 1 ulp} {

     set x 0.75

     set bit 0.125

     while 1 {

 	set newx [expr { $x - $bit }]

 	if { $newx == $x || $newx == 0.5 } break

 	set x $newx

 	set bit [expr { $bit / 2.0 }]

     }

     expr {round($x)}

 } 1

 test expr-46.11 {round() boundary case - -1/2 - 1 ulp} {

     set x -0.75

     set bit 0.125

     while 1 {

 	set newx [expr { $x + $bit }]

 	if { $newx == $x || $newx == -0.5 } break

 	set x $newx

 	set bit [expr { $bit / 2.0 }]

     }

     expr {round($x)}

 } -1

 test expr-46.12 {round() boundary case - -1/2 + 1 ulp} {

     set x -0.25

     set bit 0.125

     while 1 {

 	set newx [expr { $x - $bit }]

 	if { $newx == $x || $newx == -0.5 } break

 	set x $newx

 	set bit [expr { $bit / 2.0 }]

     }

     expr {round($x)}

 } 0

 test expr-46.13 {round() boundary case - round down} {

     expr {round(2147483647 - 0.51)}

 } 2147483646

 test expr-46.14 {round() boundary case - round up} {

     expr {round(2147483647 - 0.50)}

 } 2147483647

 test expr-46.15 {round() boundary case - round up to wide} {

     expr {round(2147483647 + 0.50)}

 } [expr {wide(2147483647) + 1}]

 test expr-46.16 {round() boundary case - round up} {

     expr {round(-2147483648 + 0.51)}

 } -2147483647

 test expr-46.17 {round() boundary case - round down} {

     expr {round(-2147483648 + 0.50)}

 } -2147483648

 test expr-46.18 {round() boundary case - round down to wide} {

     expr {round(-2147483648 - 0.50)}

 } [expr {wide(-2147483648) - 1}]

 # cleanup

 if {[info exists a]} {

     unset a

 }

 ::tcltest::cleanupTests

 return