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annotate druntime/import/core/stdc/fenv.d @ 1458:e0b2d67cfe7c

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Added druntime (this should be removed once it works).
author Robert Clipsham <robert@octarineparrot.com>
date Tue, 02 Jun 2009 17:43:06 +0100
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1458
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1 /**
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2 * D header file for C99.
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3 *
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4 * Copyright: Copyright Sean Kelly 2005 - 2009.
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5 * License: <a href="http://www.boost.org/LICENSE_1_0.txt>Boost License 1.0</a>.
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6 * Authors: Sean Kelly
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7 * Standards: ISO/IEC 9899:1999 (E)
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8 *
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9 * Copyright Sean Kelly 2005 - 2009.
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10 * Distributed under the Boost Software License, Version 1.0.
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11 * (See accompanying file LICENSE_1_0.txt or copy at
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12 * http://www.boost.org/LICENSE_1_0.txt)
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13 */
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14 module core.stdc.fenv;
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15
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16 extern (C):
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17
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18 version( Windows )
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19 {
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20 struct fenv_t
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21 {
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22 ushort status;
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23 ushort control;
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24 ushort round;
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25 ushort[2] reserved;
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26 }
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27
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28 alias int fexcept_t;
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29 }
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30 else version( linux )
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31 {
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32 struct fenv_t
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33 {
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34 ushort __control_word;
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35 ushort __unused1;
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36 ushort __status_word;
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37 ushort __unused2;
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38 ushort __tags;
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39 ushort __unused3;
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40 uint __eip;
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41 ushort __cs_selector;
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42 ushort __opcode;
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43 uint __data_offset;
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44 ushort __data_selector;
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45 ushort __unused5;
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46 }
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47
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48 alias int fexcept_t;
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49 }
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50 else version ( OSX )
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51 {
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52 version ( BigEndian )
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53 {
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54 alias uint fenv_t;
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55 alias uint fexcept_t;
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56 }
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57 version ( LittleEndian )
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58 {
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59 struct fenv_t
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60 {
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61 ushort __control;
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62 ushort __status;
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63 uint __mxcsr;
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64 byte[8] __reserved;
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65 }
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66
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67 alias ushort fexcept_t;
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68 }
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69 }
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70 else version ( freebsd )
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71 {
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72 struct fenv_t
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73 {
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74 ushort __control;
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75 ushort __mxcsr_hi;
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76 ushort __status;
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77 ushort __mxcsr_lo;
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78 uint __tag;
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79 byte[16] __other;
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80 }
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81
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82 alias ushort fexcept_t;
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83 }
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84 else
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85 {
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86 static assert( false );
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87 }
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88
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89 enum
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90 {
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91 FE_INVALID = 1,
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92 FE_DENORMAL = 2, // non-standard
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93 FE_DIVBYZERO = 4,
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94 FE_OVERFLOW = 8,
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95 FE_UNDERFLOW = 0x10,
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96 FE_INEXACT = 0x20,
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97 FE_ALL_EXCEPT = 0x3F,
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98 FE_TONEAREST = 0,
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99 FE_UPWARD = 0x800,
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100 FE_DOWNWARD = 0x400,
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101 FE_TOWARDZERO = 0xC00,
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102 }
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103
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104 version( Windows )
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105 {
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106 private extern fenv_t _FE_DFL_ENV;
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107 fenv_t* FE_DFL_ENV = &_FE_DFL_ENV;
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108 }
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109 else version( linux )
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110 {
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111 fenv_t* FE_DFL_ENV = cast(fenv_t*)(-1);
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112 }
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113 else version( OSX )
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114 {
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115 private extern fenv_t _FE_DFL_ENV;
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116 fenv_t* FE_DFL_ENV = &_FE_DFL_ENV;
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117 }
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118 else version( freebsd )
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119 {
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120 private extern fenv_t __fe_dfl_env;
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121 fenv_t* FE_DFL_ENV = &__fe_dfl_env;
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122 }
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123 else
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124 {
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125 static assert( false );
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126 }
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127
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128 void feraiseexcept(int excepts);
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129 void feclearexcept(int excepts);
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130
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131 int fetestexcept(int excepts);
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132 int feholdexcept(fenv_t* envp);
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133
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134 void fegetexceptflag(fexcept_t* flagp, int excepts);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
135 void fesetexceptflag(in fexcept_t* flagp, int excepts);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
136
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
137 int fegetround();
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
138 int fesetround(int round);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
139
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
140 void fegetenv(fenv_t* envp);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
141 void fesetenv(in fenv_t* envp);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
142 void feupdateenv(in fenv_t* envp);