1 math.h |
1 /* |
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2 * Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.symbianfoundation.org/legal/licencesv10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 |
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21 |
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22 |
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23 /** |
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24 @file |
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25 @publishedAll |
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26 @released |
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27 */ |
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28 |
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29 #ifndef _MATH_H |
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30 #ifdef __cplusplus |
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31 extern "C" { |
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32 #endif |
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33 #define _MATH_H |
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34 |
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35 #include <sys/reent.h> |
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36 #include <machine/ieeefp.h> |
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37 #include "_ansi.h" |
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38 |
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39 void MapSymbianErrorCodeToErrno(int, int); |
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40 |
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41 /** |
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42 Reentrant ANSI C functions |
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43 */ |
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44 IMPORT_C double atan (double) __SOFTFP; |
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45 IMPORT_C double cos (double) __SOFTFP; |
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46 IMPORT_C double sin (double) __SOFTFP; |
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47 IMPORT_C double tan (double) __SOFTFP; |
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48 IMPORT_C double tanh (double) __SOFTFP; |
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49 IMPORT_C double frexp (double, int *) __SOFTFP; |
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50 IMPORT_C double modf (double, double *) __SOFTFP; |
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51 IMPORT_C double ceil (double) __SOFTFP; |
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52 IMPORT_C double fabs (double) __SOFTFP; |
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53 IMPORT_C double floor (double) __SOFTFP; |
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54 |
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55 /** |
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56 Non reentrant ANSI C functions. |
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57 */ |
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58 #ifndef _REENT_ONLY |
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59 IMPORT_C double acos (double) __SOFTFP; |
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60 IMPORT_C double asin (double) __SOFTFP; |
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61 IMPORT_C double atan2 (double, double) __SOFTFP; |
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62 IMPORT_C double cosh (double) __SOFTFP; |
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63 IMPORT_C double sinh (double) __SOFTFP; |
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64 IMPORT_C double exp (double) __SOFTFP; |
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65 IMPORT_C double ldexp (double, int) __SOFTFP; |
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66 IMPORT_C double log (double) __SOFTFP; |
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67 IMPORT_C double log10 (double) __SOFTFP; |
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68 IMPORT_C double pow (double, double) __SOFTFP; |
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69 IMPORT_C double sqrt (double) __SOFTFP; |
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70 IMPORT_C double fmod (double, double) __SOFTFP; |
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71 #endif /* ! defined (_REENT_ONLY) */ |
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72 |
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73 /** |
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74 Non ANSI functions provided by EPOC32 |
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75 */ |
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76 IMPORT_C double copysign(double, double) __SOFTFP; |
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77 IMPORT_C double expm1 (double) __SOFTFP; |
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78 IMPORT_C int finite (double) __SOFTFP; |
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79 IMPORT_C int isnan (double) __SOFTFP; |
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80 IMPORT_C int isinf (double) __SOFTFP; |
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81 IMPORT_C double rint (double) __SOFTFP; |
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82 IMPORT_C double scalbn (double, int) __SOFTFP; |
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83 |
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84 /* |
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85 strtod, atof, etc. may return HUGE_VAL |
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86 @internalComponent |
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87 */ |
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88 #define HUGE_VAL 1.7976931348623157E+308 /* KMaxTReal from e32math.h */ |
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89 |
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90 #ifndef _STRICT_ANSI |
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91 |
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92 /** |
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93 Non ANSI double precision functions. |
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94 */ |
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95 extern double infinity (void); |
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96 extern double nan (void); |
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97 extern int ilogb (double); |
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98 |
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99 extern double asinh (double); |
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100 extern double cbrt (double); |
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101 extern double nextafter (double, double); |
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102 |
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103 extern double log1p (double); |
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104 |
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105 #ifndef _REENT_ONLY |
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106 extern double acosh (double); |
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107 extern double atanh (double); |
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108 extern double remainder (double, double); |
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109 extern double gamma (double); |
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110 extern double gamma_r (double, int *); |
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111 extern double lgamma (double); |
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112 extern double lgamma_r (double, int *); |
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113 extern double erf (double); |
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114 extern double erfc (double); |
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115 extern double y0 (double); |
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116 extern double y1 (double); |
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117 extern double yn (int, double); |
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118 extern double j0 (double); |
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119 extern double j1 (double); |
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120 extern double jn (int, double); |
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121 #define log2(x) (log (x) / M_LOG2_E) |
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122 |
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123 extern double hypot (double, double); |
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124 |
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125 extern double cabs(); |
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126 extern double drem (double, double); |
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127 |
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128 #endif /* ! defined (_REENT_ONLY) */ |
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129 |
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130 /** |
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131 Single precision versions of ANSI functions. |
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132 */ |
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133 extern float atanf (float); |
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134 extern float cosf (float); |
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135 extern float sinf (float); |
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136 extern float tanf (float); |
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137 extern float tanhf (float); |
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138 extern float frexpf (float, int *); |
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139 extern float modff (float, float *); |
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140 extern float ceilf (float); |
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141 extern float fabsf (float); |
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142 extern float floorf (float); |
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143 |
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144 #ifndef _REENT_ONLY |
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145 extern float acosf (float); |
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146 extern float asinf (float); |
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147 extern float atan2f (float, float); |
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148 extern float coshf (float); |
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149 extern float sinhf (float); |
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150 extern float expf (float); |
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151 extern float ldexpf (float, int); |
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152 extern float logf (float); |
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153 extern float log10f (float); |
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154 extern float powf (float, float); |
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155 extern float sqrtf (float); |
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156 extern float fmodf (float, float); |
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157 #endif /* ! defined (_REENT_ONLY) */ |
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158 |
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159 /** |
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160 Other single precision functions. |
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161 */ |
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162 extern float infinityf (void); |
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163 extern float nanf (void); |
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164 extern int isnanf (float); |
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165 extern int isinff (float); |
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166 extern int finitef (float); |
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167 extern float copysignf (float, float); |
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168 extern int ilogbf (float); |
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169 extern float asinhf (float); |
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170 extern float cbrtf (float); |
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171 extern float nextafterf (float, float); |
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172 extern float rintf (float); |
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173 extern float scalbnf (float, int); |
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174 extern float log1pf (float); |
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175 extern float expm1f (float); |
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176 |
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177 #ifndef _REENT_ONLY |
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178 extern float acoshf (float); |
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179 extern float atanhf (float); |
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180 extern float remainderf (float, float); |
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181 extern float gammaf (float); |
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182 extern float gammaf_r (float, int *); |
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183 extern float lgammaf (float); |
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184 extern float lgammaf_r (float, int *); |
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185 extern float erff (float); |
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186 extern float erfcf (float); |
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187 extern float y0f (float); |
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188 extern float y1f (float); |
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189 extern float ynf (int, float); |
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190 extern float j0f (float); |
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191 extern float j1f (float); |
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192 extern float jnf (int, float); |
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193 #define log2f(x) (logf (x) / (float) M_LOG2_E) |
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194 extern float hypotf (float, float); |
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195 extern float cabsf(); |
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196 extern float dremf (float, float); |
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197 #endif /* ! defined (_REENT_ONLY) */ |
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198 |
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199 /** |
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200 The gamma functions use a global variable, signgam. |
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201 */ |
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202 extern int signgam; |
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203 |
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204 /** |
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205 The exception structure passed to the matherr routine. |
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206 */ |
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207 struct exception |
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208 { |
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209 int type; |
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210 char *name; |
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211 double arg1; |
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212 double arg2; |
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213 double retval; |
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214 int err; |
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215 }; |
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216 |
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217 extern int matherr (struct exception *e); |
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218 |
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219 /** |
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220 Values for the type field of struct exception. |
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221 */ |
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222 #define DOMAIN 1 |
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223 #define SING 2 |
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224 #define OVERFLOW 3 |
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225 #define UNDERFLOW 4 |
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226 #define TLOSS 5 |
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227 #define PLOSS 6 |
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228 |
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229 /** |
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230 Useful constants. |
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231 */ |
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232 #define M_E 2.7182818284590452354 |
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233 #define M_LOG2E 1.4426950408889634074 |
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234 #define M_LOG10E 0.43429448190325182765 |
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235 #define M_LN2 0.69314718055994530942 |
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236 #define M_LN10 2.30258509299404568402 |
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237 #define M_PI 3.14159265358979323846 |
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238 #define M_TWOPI (M_PI * 2.0) |
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239 #define M_PI_2 1.57079632679489661923 |
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240 #define M_PI_4 0.78539816339744830962 |
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241 #define M_3PI_4 2.3561944901923448370E0 |
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242 #define M_SQRTPI 1.77245385090551602792981 |
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243 #define M_1_PI 0.31830988618379067154 |
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244 #define M_2_PI 0.63661977236758134308 |
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245 #define M_2_SQRTPI 1.12837916709551257390 |
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246 #define M_SQRT2 1.41421356237309504880 |
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247 #define M_SQRT1_2 0.70710678118654752440 |
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248 #define M_LN2LO 1.9082149292705877000E-10 |
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249 #define M_LN2HI 6.9314718036912381649E-1 |
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250 #define M_SQRT3 1.73205080756887719000 |
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251 #define M_IVLN10 0.43429448190325182765 /* 1 / log(10) */ |
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252 #define M_LOG2_E 0.693147180559945309417 |
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253 #define M_INVLN2 1.4426950408889633870E0 /* 1 / log(2) */ |
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254 |
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255 /** |
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256 Global control over fdlibm error handling. |
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257 */ |
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258 enum __fdlibm_version |
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259 { |
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260 __fdlibm_ieee = -1, |
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261 __fdlibm_svid, |
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262 __fdlibm_xopen, |
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263 __fdlibm_posix |
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264 }; |
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265 |
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266 #define _LIB_VERSION_TYPE enum __fdlibm_version |
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267 #define _LIB_VERSION __fdlib_version |
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268 |
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269 extern _LIB_VERSION_TYPE _LIB_VERSION; |
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270 |
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271 #define _IEEE_ __fdlibm_ieee |
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272 #define _SVID_ __fdlibm_svid |
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273 #define _XOPEN_ __fdlibm_xopen |
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274 #define _POSIX_ __fdlibm_posix |
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275 |
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276 #endif /* ! defined (_STRICT_ANSI) */ |
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277 |
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278 #ifdef __cplusplus |
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279 } |
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280 #endif |
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281 #endif /* _MATH_H */ |