1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/epoc32/include/stdapis/stlport/stl/_complex.c Wed Mar 31 12:33:34 2010 +0100
1.3 @@ -0,0 +1,169 @@
1.4 +/*
1.5 + * Copyright (c) 1999
1.6 + * Silicon Graphics Computer Systems, Inc.
1.7 + *
1.8 + * Copyright (c) 1999
1.9 + * Boris Fomitchev
1.10 + *
1.11 + * This material is provided "as is", with absolutely no warranty expressed
1.12 + * or implied. Any use is at your own risk.
1.13 + *
1.14 + * Permission to use or copy this software for any purpose is hereby granted
1.15 + * without fee, provided the above notices are retained on all copies.
1.16 + * Permission to modify the code and to distribute modified code is granted,
1.17 + * provided the above notices are retained, and a notice that the code was
1.18 + * modified is included with the above copyright notice.
1.19 + *
1.20 + */
1.21 +#ifndef _STLP_COMPLEX_C
1.22 +#define _STLP_COMPLEX_C
1.23 +
1.24 +# ifndef _STLP_internal_complex_h
1.25 +# include <stl/_complex.h>
1.26 +# endif
1.27 +
1.28 +#include <istream>
1.29 +
1.30 +#ifdef _STLP_USE_NEW_IOSTREAMS
1.31 +# include <sstream>
1.32 +#endif
1.33 +
1.34 +_STLP_BEGIN_NAMESPACE
1.35 +
1.36 +// Non-inline member functions.
1.37 +
1.38 +template <class _Tp>
1.39 +void complex<_Tp>::_div(const _Tp& __z1_r, const _Tp& __z1_i,
1.40 + const _Tp& __z2_r, const _Tp& __z2_i,
1.41 + _Tp& __res_r, _Tp& __res_i) {
1.42 + _Tp __ar = __z2_r >= 0 ? __z2_r : -__z2_r;
1.43 + _Tp __ai = __z2_i >= 0 ? __z2_i : -__z2_i;
1.44 +
1.45 + if (__ar <= __ai) {
1.46 + _Tp __ratio = __z2_r / __z2_i;
1.47 + _Tp __denom = __z2_i * (1 + __ratio * __ratio);
1.48 + __res_r = (__z1_r * __ratio + __z1_i) / __denom;
1.49 + __res_i = (__z1_i * __ratio - __z1_r) / __denom;
1.50 + }
1.51 + else {
1.52 + _Tp __ratio = __z2_i / __z2_r;
1.53 + _Tp __denom = __z2_r * (1 + __ratio * __ratio);
1.54 + __res_r = (__z1_r + __z1_i * __ratio) / __denom;
1.55 + __res_i = (__z1_i - __z1_r * __ratio) / __denom;
1.56 + }
1.57 +}
1.58 +
1.59 +template <class _Tp>
1.60 +void complex<_Tp>::_div(const _Tp& __z1_r,
1.61 + const _Tp& __z2_r, const _Tp& __z2_i,
1.62 + _Tp& __res_r, _Tp& __res_i) {
1.63 + _Tp __ar = __z2_r >= 0 ? __z2_r : -__z2_r;
1.64 + _Tp __ai = __z2_i >= 0 ? __z2_i : -__z2_i;
1.65 +
1.66 + if (__ar <= __ai) {
1.67 + _Tp __ratio = __z2_r / __z2_i;
1.68 + _Tp __denom = __z2_i * (1 + __ratio * __ratio);
1.69 + __res_r = (__z1_r * __ratio) / __denom;
1.70 + __res_i = - __z1_r / __denom;
1.71 + }
1.72 + else {
1.73 + _Tp __ratio = __z2_i / __z2_r;
1.74 + _Tp __denom = __z2_r * (1 + __ratio * __ratio);
1.75 + __res_r = __z1_r / __denom;
1.76 + __res_i = - (__z1_r * __ratio) / __denom;
1.77 + }
1.78 +}
1.79 +
1.80 +// I/O.
1.81 +
1.82 +#ifdef _STLP_USE_NEW_IOSTREAMS
1.83 +
1.84 +// Complex output, in the form (re,im). We use a two-step process
1.85 +// involving stringstream so that we get the padding right.
1.86 +template <class _Tp, class _CharT, class _Traits>
1.87 +basic_ostream<_CharT, _Traits>& _STLP_CALL
1.88 +operator<<(basic_ostream<_CharT, _Traits>& __os, const complex<_Tp>& __z)
1.89 +{
1.90 + basic_ostringstream<_CharT, _Traits, allocator<_CharT> > __tmp;
1.91 + __tmp.flags(__os.flags());
1.92 + __tmp.imbue(__os.getloc());
1.93 + __tmp.precision(__os.precision());
1.94 + __tmp << '(' << __z.real() << ',' << __z.imag() << ')';
1.95 + return __os << __tmp.str();
1.96 +}
1.97 +
1.98 +// Complex input from arbitrary streams. Note that results in some
1.99 +// locales may be confusing, since the decimal character varies with
1.100 +// locale and the separator between real and imaginary parts does not.
1.101 +
1.102 +template <class _Tp, class _CharT, class _Traits>
1.103 +basic_istream<_CharT, _Traits>& _STLP_CALL
1.104 +operator>>(basic_istream<_CharT, _Traits>& __is, complex<_Tp>& __z)
1.105 +{
1.106 + _Tp __re = 0;
1.107 + _Tp __im = 0;
1.108 +
1.109 + // typedef ctype<_CharT> _Ctype;
1.110 + // locale __loc = __is.getloc();
1.111 + //const _Ctype& __c_type = use_facet<_Ctype>(__loc);
1.112 + const ctype<_CharT>& __c_type = *(const ctype<_CharT>*)__is._M_ctype_facet();
1.113 +
1.114 + char __punct[4] = "(,)";
1.115 + _CharT __wpunct[3];
1.116 + __c_type.widen(__punct, __punct + 3, __wpunct);
1.117 +
1.118 + _CharT __c;
1.119 +
1.120 + __is >> __c;
1.121 + if (_Traits::eq(__c, __wpunct[0])) { // Left paren
1.122 + __is >> __re >> __c;
1.123 + if (_Traits::eq(__c, __wpunct[1])) // Comma
1.124 + __is >> __im >> __c;
1.125 + if (!_Traits::eq(__c, __wpunct[2])) // Right paren
1.126 + __is.setstate(ios_base::failbit);
1.127 + }
1.128 + else {
1.129 + __is.putback(__c);
1.130 + __is >> __re;
1.131 + }
1.132 +
1.133 + if (__is)
1.134 + __z = complex<_Tp>(__re, __im);
1.135 + return __is;
1.136 +}
1.137 +
1.138 +
1.139 +#else /* _STLP_USE_NEW_IOSTREAMS */
1.140 +
1.141 +template <class _Tp>
1.142 +ostream& _STLP_CALL operator<<(ostream& s, const complex<_Tp>& __z)
1.143 +{
1.144 + return s << "( " << __z._M_re <<", " << __z._M_im <<")";
1.145 +}
1.146 +
1.147 +template <class _Tp>
1.148 +istream& _STLP_CALL operator>>(istream& s, complex<_Tp>& a)
1.149 +{
1.150 + _Tp re = 0, im = 0;
1.151 + char c = 0;
1.152 +
1.153 + s >> c;
1.154 + if (c == '(') {
1.155 + s >> re >> c;
1.156 + if (c == ',') s >> im >> c;
1.157 + if (c != ')') s.clear(ios::badbit);
1.158 + }
1.159 + else {
1.160 + s.putback(c);
1.161 + s >> re;
1.162 + }
1.163 +
1.164 + if (s) a = complex<_Tp>(re, im);
1.165 + return s;
1.166 +}
1.167 +
1.168 +#endif /* _STLP_USE_NEW_IOSTREAMS */
1.169 +
1.170 +_STLP_END_NAMESPACE
1.171 +
1.172 +#endif /* _STLP_COMPLEX_C */