annotate packages/language/c/libm/current/include/complex.h @ 3337:77f9d3253c3e

Add: Complex number header and library (single and double precision floating point), port from Newlib. Add: Single precision floating point library, port from Newlib. [ Bugzilla 1001539 ]
author vae
date Sun, 25 Aug 2013 14:38:57 +0000
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3337
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1 #ifndef CYGONCE_COMPLEX_H
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2 #define CYGONCE_COMPLEX_H
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3
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4 //===========================================================================
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5 //
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6 // complex.h
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7 //
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8 // Standard complex number functions conforming to ANSI and other standards
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9 //
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10 //===========================================================================
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11 // ####ECOSGPLCOPYRIGHTBEGIN####
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12 // -------------------------------------------
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13 // This file is part of eCos, the Embedded Configurable Operating System.
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14 // Copyright (C) 2013 Free Software Foundation, Inc.
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15 //
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16 // eCos is free software; you can redistribute it and/or modify it under
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17 // the terms of the GNU General Public License as published by the Free
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18 // Software Foundation; either version 2 or (at your option) any later
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19 // version.
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20 //
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21 // eCos is distributed in the hope that it will be useful, but WITHOUT
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22 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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23 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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24 // for more details.
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25 //
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26 // You should have received a copy of the GNU General Public License
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27 // along with eCos; if not, write to the Free Software Foundation, Inc.,
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28 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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29 //
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30 // As a special exception, if other files instantiate templates or use
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31 // macros or inline functions from this file, or you compile this file
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32 // and link it with other works to produce a work based on this file,
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33 // this file does not by itself cause the resulting work to be covered by
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34 // the GNU General Public License. However the source code for this file
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35 // must still be made available in accordance with section (3) of the GNU
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36 // General Public License v2.
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37 //
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38 // This exception does not invalidate any other reasons why a work based
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39 // on this file might be covered by the GNU General Public License.
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40 // -------------------------------------------
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41 // ####ECOSGPLCOPYRIGHTEND####
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42 //===========================================================================
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43 //#####DESCRIPTIONBEGIN####
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44 //
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45 // Author(s): ilijak
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46 // Based on: see below
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47 // Contributors:
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48 // Date: 2013-06-05
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49 // Purpose:
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50 // Description: Standard complex number mathematical functions.
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51 //
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52 // Usage: #include <complex.h>
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53 //
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54 //####DESCRIPTIONEND####
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55 //
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56 //===========================================================================
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57
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58 // This file was derived from a file with following copyright
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59
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60 /* $NetBSD: complex.h,v 1.3 2010/09/15 16:11:30 christos Exp $ */
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61
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62 /*
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63 * Written by Matthias Drochner.
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64 * Public domain.
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65 */
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66
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67 #ifndef _COMPLEX_H
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68 #define _COMPLEX_H
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69 #endif
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70
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71 #define complex _Complex
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72 #define _Complex_I (1.0fi)
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73 #define I _Complex_I
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74
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75 // 7.3.5 Trigonometric functions
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76 // 7.3.5.1 The cacos functions
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77 double complex cacos(double complex);
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78 float complex cacosf(float complex);
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79
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80 // 7.3.5.2 The casin functions
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81 double complex casin(double complex);
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82 float complex casinf(float complex);
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83
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84 // 7.3.5.1 The catan functions
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85 double complex catan(double complex);
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86 float complex catanf(float complex);
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87
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88 // 7.3.5.1 The ccos functions
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89 double complex ccos(double complex);
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90 float complex ccosf(float complex);
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91
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92 // 7.3.5.1 The csin functions
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93 double complex csin(double complex);
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94 float complex csinf(float complex);
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95
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96 // 7.3.5.1 The ctan functions
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97 double complex ctan(double complex);
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98 float complex ctanf(float complex);
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99
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100 // 7.3.6 Hyperbolic functions
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101 // 7.3.6.1 The cacosh functions
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102 double complex cacosh(double complex);
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103 float complex cacoshf(float complex);
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104
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105 // 7.3.6.2 The casinh functions
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106 double complex casinh(double complex);
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107 float complex casinhf(float complex);
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108
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109 // 7.3.6.3 The catanh functions
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110 double complex catanh(double complex);
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111 float complex catanhf(float complex);
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112
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113 // 7.3.6.4 The ccosh functions
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114 double complex ccosh(double complex);
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115 float complex ccoshf(float complex);
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116
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117 // 7.3.6.5 The csinh functions
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118 double complex csinh(double complex);
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119 float complex csinhf(float complex);
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120
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121 // 7.3.6.6 The ctanh functions
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122 double complex ctanh(double complex);
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123 float complex ctanhf(float complex);
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124
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125 // 7.3.7 Exponential and logarithmic functions
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126 // 7.3.7.1 The cexp functions
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127 double complex cexp(double complex);
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128 float complex cexpf(float complex);
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129
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130 // 7.3.7.2 The clog functions
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131 double complex clog(double complex);
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132 float complex clogf(float complex);
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133
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134 // 7.3.9 Manipulation functions
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135 // 7.3.9.2 The cimag functions
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136 double cimag(double complex);
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137 float cimagf(float complex);
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138 //long double cimagl(long double complex);
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139
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140 // 7.3.9.3 The conj functions
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141 double complex conj(double complex);
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142 float complex conjf(float complex);
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143 //long double complex conjl(long double complex);
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144
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145 // 7.3.9.4 The cproj functions
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146 double complex cproj(double complex);
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147 float complex cprojf(float complex);
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148 //long double complex cprojl(long double complex);
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149
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150 // 7.3.9.5 The creal functions
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151 double creal(double complex);
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152 float crealf(float complex);
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153 //long double creall(long double complex);
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154
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155 // 7.3.9.1 The carg functions
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156 #ifdef CYGSEM_LIBM_IEEE_API_INLINE
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157 CYGBLD_FORCE_INLINE double
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158 carg(double complex z)
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159 {
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160 return atan2( cimag(z) , creal(z) );
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161 }
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162
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163 CYGBLD_FORCE_INLINE float
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164 cargf(float complex z)
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165 {
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166 return atan2f( cimagf(z) , crealf(z) );
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167 }
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168 #else
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169 double carg(double complex);
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170 float cargf(float complex);
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171 #endif
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172
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173 // 7.3.8 Power and absolute-value functions
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174 // 7.3.8.1 The cabs functions
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175 #ifdef CYGSEM_LIBM_IEEE_API_INLINE
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176 CYGBLD_FORCE_INLINE double
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177 cabs(double complex z)
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178 {
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179 return hypot( creal(z) , cimag(z) );
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180 }
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181
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182 CYGBLD_FORCE_INLINE float
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183 cabsf(float complex z)
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184 {
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185 return hypotf( crealf(z) , cimagf(z) );
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186 }
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187 #else
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188 double cabs(double complex) ;
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189 float cabsf(float complex) ;
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190 #endif
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191
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192 // 7.3.8.2 The cpow functions
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193 double complex cpow(double complex, double complex);
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194 float complex cpowf(float complex, float complex);
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195
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196 // 7.3.8.3 The csqrt functions
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197 double complex csqrt(double complex);
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198 float complex csqrtf(float complex);
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199
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200 #endif //CYGONCE_COMPLEX_H
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201
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202 // End of complex.h