1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/genericopenlibs/cstdlib/LSTDIO/PUTCHAR.C	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,111 @@
     1.4 +/* PUTCHAR.C
     1.5 + * 
     1.6 + * Portions Copyright (c) 1990-2006 Nokia Corporation and/or its subsidiary(-ies).
     1.7 + * All rights reserved.
     1.8 + */
     1.9 +
    1.10 +/*
    1.11 + * Copyright (c) 1990 The Regents of the University of California.
    1.12 + * All rights reserved.
    1.13 + *
    1.14 + * Redistribution and use in source and binary forms are permitted
    1.15 + * provided that the above copyright notice and this paragraph are
    1.16 + * duplicated in all such forms and that any documentation,
    1.17 + * advertising materials, and other materials related to such
    1.18 + * distribution and use acknowledge that the software was developed
    1.19 + * by the University of California, Berkeley.  The name of the
    1.20 + * University may not be used to endorse or promote products derived
    1.21 + * from this software without specific prior written permission.
    1.22 + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
    1.23 + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
    1.24 + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    1.25 + */
    1.26 +
    1.27 +/*
    1.28 +FUNCTION
    1.29 +<<putchar>>---write a character (macro)
    1.30 +
    1.31 +INDEX
    1.32 +	putchar
    1.33 +INDEX
    1.34 +	_putchar_r
    1.35 +
    1.36 +ANSI_SYNOPSIS
    1.37 +	#include <stdio.h>
    1.38 +	int putchar(int <[ch]>);
    1.39 +
    1.40 +	int _putchar_r(void *<[reent]>, int <[ch]>);
    1.41 +
    1.42 +TRAD_SYNOPSIS
    1.43 +	#include <stdio.h>
    1.44 +	int putchar(<[ch]>)
    1.45 +	int <[ch]>;
    1.46 +
    1.47 +	int _putchar_r(<[reent]>, <[ch]>)
    1.48 +	char *<[reent]>;
    1.49 +	int <[ch]>;
    1.50 +
    1.51 +DESCRIPTION
    1.52 +<<putchar>> is a macro, defined in <<stdio.h>>.  <<putchar>>
    1.53 +writes its argument to the standard output stream,
    1.54 +after converting it from an <<int>> to an <<unsigned char>>.
    1.55 +
    1.56 +The alternate function <<_putchar_r>> is a reentrant version.  The
    1.57 +extra argument <[reent]> is a pointer to a reentrancy structure.
    1.58 +
    1.59 +RETURNS
    1.60 +If successful, <<putchar>> returns its argument <[ch]>.  If an error
    1.61 +intervenes, the result is <<EOF>>.  You can use `<<ferror(stdin)>>' to
    1.62 +query for errors.
    1.63 +
    1.64 +PORTABILITY
    1.65 +ANSI C requires <<putchar>>; it suggests, but does not require, that
    1.66 +<<putchar>> be implemented as a macro.
    1.67 +
    1.68 +Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
    1.69 +<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
    1.70 +*/
    1.71 +
    1.72 +/*
    1.73 + * A subroutine version of the macro putchar
    1.74 + */
    1.75 +
    1.76 +#include <stdio_r.h>
    1.77 +#include "LOCAL.H"
    1.78 +
    1.79 +#undef putchar
    1.80 +
    1.81 +/**
    1.82 +A reentrant version of putchar().
    1.83 +*/
    1.84 +EXPORT_C int
    1.85 +_putchar_r (struct _reent *ptr,int c)
    1.86 +{
    1.87 +  return __sputc ((unsigned char)c, _stdout_r (ptr));
    1.88 +}
    1.89 +
    1.90 +#ifndef _REENT_ONLY
    1.91 +
    1.92 +#undef putchar
    1.93 +/**
    1.94 +Write character to standard output.
    1.95 +Writes character to the current position in the standard output
    1.96 +and increases the file pointer to point to next character.
    1.97 +This routine cooresponds to: putc(character,stdout).
    1.98 +
    1.99 +@param c Character to be written. 
   1.100 +
   1.101 +@return On Success, returns the written character.
   1.102 +		On Failure, EOF is returned and errno may be set.
   1.103 +*/
   1.104 +EXPORT_C int
   1.105 +putchar (int c)
   1.106 +{
   1.107 +  /* CHECK_INIT is (eventually) called by __swbuf.  */
   1.108 +  struct _reent *r = _REENT2;
   1.109 +  if (!r)
   1.110 +	return EOF; // Memory for library globals is not allocated (errno not set).
   1.111 +  return(_putchar_r (r, c));
   1.112 +}
   1.113 +
   1.114 +#endif