1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/epoc32/include/tools/stlport/stl/_complex.c Wed Mar 31 12:33:34 2010 +0100
1.3 @@ -0,0 +1,148 @@
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
1.25 +# include <stl/_complex.h>
1.26 +#endif
1.27 +
1.28 +#if !defined (_STLP_USE_NO_IOSTREAMS)
1.29 +# ifndef _STLP_INTERNAL_ISTREAM
1.30 +# include <stl/_istream.h>
1.31 +# endif
1.32 +
1.33 +# ifndef _STLP_INTERNAL_SSTREAM
1.34 +# include <stl/_sstream.h>
1.35 +# endif
1.36 +
1.37 +# ifndef _STLP_STRING_IO_H
1.38 +# include <stl/_string_io.h>
1.39 +# endif
1.40 +#endif
1.41 +
1.42 +_STLP_BEGIN_NAMESPACE
1.43 +
1.44 +// Non-inline member functions.
1.45 +
1.46 +template <class _Tp>
1.47 +void complex<_Tp>::_div(const _Tp& __z1_r, const _Tp& __z1_i,
1.48 + const _Tp& __z2_r, const _Tp& __z2_i,
1.49 + _Tp& __res_r, _Tp& __res_i) {
1.50 + _Tp __ar = __z2_r >= 0 ? __z2_r : -__z2_r;
1.51 + _Tp __ai = __z2_i >= 0 ? __z2_i : -__z2_i;
1.52 +
1.53 + if (__ar <= __ai) {
1.54 + _Tp __ratio = __z2_r / __z2_i;
1.55 + _Tp __denom = __z2_i * (1 + __ratio * __ratio);
1.56 + __res_r = (__z1_r * __ratio + __z1_i) / __denom;
1.57 + __res_i = (__z1_i * __ratio - __z1_r) / __denom;
1.58 + }
1.59 + else {
1.60 + _Tp __ratio = __z2_i / __z2_r;
1.61 + _Tp __denom = __z2_r * (1 + __ratio * __ratio);
1.62 + __res_r = (__z1_r + __z1_i * __ratio) / __denom;
1.63 + __res_i = (__z1_i - __z1_r * __ratio) / __denom;
1.64 + }
1.65 +}
1.66 +
1.67 +template <class _Tp>
1.68 +void complex<_Tp>::_div(const _Tp& __z1_r,
1.69 + const _Tp& __z2_r, const _Tp& __z2_i,
1.70 + _Tp& __res_r, _Tp& __res_i) {
1.71 + _Tp __ar = __z2_r >= 0 ? __z2_r : -__z2_r;
1.72 + _Tp __ai = __z2_i >= 0 ? __z2_i : -__z2_i;
1.73 +
1.74 + if (__ar <= __ai) {
1.75 + _Tp __ratio = __z2_r / __z2_i;
1.76 + _Tp __denom = __z2_i * (1 + __ratio * __ratio);
1.77 + __res_r = (__z1_r * __ratio) / __denom;
1.78 + __res_i = - __z1_r / __denom;
1.79 + }
1.80 + else {
1.81 + _Tp __ratio = __z2_i / __z2_r;
1.82 + _Tp __denom = __z2_r * (1 + __ratio * __ratio);
1.83 + __res_r = __z1_r / __denom;
1.84 + __res_i = - (__z1_r * __ratio) / __denom;
1.85 + }
1.86 +}
1.87 +
1.88 +// I/O.
1.89 +#if !defined (_STLP_USE_NO_IOSTREAMS)
1.90 +
1.91 +// Complex output, in the form (re,im). We use a two-step process
1.92 +// involving stringstream so that we get the padding right.
1.93 +template <class _Tp, class _CharT, class _Traits>
1.94 +basic_ostream<_CharT, _Traits>& _STLP_CALL
1.95 +operator<<(basic_ostream<_CharT, _Traits>& __os, const complex<_Tp>& __z) {
1.96 + basic_ostringstream<_CharT, _Traits, allocator<_CharT> > __tmp;
1.97 + __tmp.flags(__os.flags());
1.98 + __tmp.imbue(__os.getloc());
1.99 + __tmp.precision(__os.precision());
1.100 + __tmp << '(' << __z.real() << ',' << __z.imag() << ')';
1.101 + return __os << __tmp.str();
1.102 +}
1.103 +
1.104 +// Complex input from arbitrary streams. Note that results in some
1.105 +// locales may be confusing, since the decimal character varies with
1.106 +// locale and the separator between real and imaginary parts does not.
1.107 +
1.108 +template <class _Tp, class _CharT, class _Traits>
1.109 +basic_istream<_CharT, _Traits>& _STLP_CALL
1.110 +operator>>(basic_istream<_CharT, _Traits>& __is, complex<_Tp>& __z) {
1.111 + _Tp __re = 0;
1.112 + _Tp __im = 0;
1.113 +
1.114 + // typedef ctype<_CharT> _Ctype;
1.115 + // locale __loc = __is.getloc();
1.116 + //const _Ctype& __c_type = use_facet<_Ctype>(__loc);
1.117 + const ctype<_CharT>& __c_type = *__STATIC_CAST(const ctype<_CharT>*, __is._M_ctype_facet());
1.118 +
1.119 + const char __punct[4] = "(,)";
1.120 + _CharT __wpunct[3];
1.121 + __c_type.widen(__punct, __punct + 3, __wpunct);
1.122 +
1.123 + _CharT __c;
1.124 +
1.125 + __is >> __c;
1.126 + if (_Traits::eq(__c, __wpunct[0])) { // Left paren
1.127 + __is >> __re >> __c;
1.128 + if (_Traits::eq(__c, __wpunct[1])) // Comma
1.129 + __is >> __im >> __c;
1.130 + if (!_Traits::eq(__c, __wpunct[2])) // Right paren
1.131 + __is.setstate(ios_base::failbit);
1.132 + }
1.133 + else {
1.134 + __is.putback(__c);
1.135 + __is >> __re;
1.136 + }
1.137 +
1.138 + if (__is)
1.139 + __z = complex<_Tp>(__re, __im);
1.140 + return __is;
1.141 +}
1.142 +
1.143 +#endif /* _STLP_USE_NO_IOSTREAMS */
1.144 +
1.145 +_STLP_END_NAMESPACE
1.146 +
1.147 +#endif /* _STLP_COMPLEX_C */
1.148 +
1.149 +// Local Variables:
1.150 +// mode:C++
1.151 +// End: