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annotate libquadmath/quadmath-imp.h @ 120:f93fa5091070

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fix conv1.c
author mir3636
date Thu, 08 Mar 2018 14:53:42 +0900
parents 04ced10e8804
children 1830386684a0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /* GCC Quad-Precision Math Library
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2 Copyright (C) 2010, 2011 Free Software Foundation, Inc.
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3 Written by Francois-Xavier Coudert <fxcoudert@gcc.gnu.org>
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4
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5 This file is part of the libquadmath library.
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6 Libquadmath is free software; you can redistribute it and/or
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7 modify it under the terms of the GNU Library General Public
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8 License as published by the Free Software Foundation; either
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9 version 2 of the License, or (at your option) any later version.
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10
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11 Libquadmath is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 Library General Public License for more details.
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15
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16 You should have received a copy of the GNU Library General Public
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17 License along with libquadmath; see the file COPYING.LIB. If
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18 not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
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19 Boston, MA 02110-1301, USA. */
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20
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21 #ifndef QUADMATH_IMP_H
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22 #define QUADMATH_IMP_H
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23
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24 #include <stdint.h>
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25 #include <stdlib.h>
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26 #include "quadmath.h"
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27 #include "config.h"
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28
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29
111
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30 /* Under IEEE 754, an architecture may determine tininess of
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31 floating-point results either "before rounding" or "after
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32 rounding", but must do so in the same way for all operations
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33 returning binary results. Define TININESS_AFTER_ROUNDING to 1 for
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34 "after rounding" architectures, 0 for "before rounding"
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35 architectures. */
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36
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37 #define TININESS_AFTER_ROUNDING 1
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38
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39
68
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40 /* Prototypes for internal functions. */
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41 extern int32_t __quadmath_rem_pio2q (__float128, __float128 *);
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42 extern void __quadmath_kernel_sincosq (__float128, __float128, __float128 *,
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43 __float128 *, int);
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44 extern __float128 __quadmath_kernel_sinq (__float128, __float128, int);
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45 extern __float128 __quadmath_kernel_cosq (__float128, __float128);
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46 extern __float128 __quadmath_x2y2m1q (__float128 x, __float128 y);
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47 extern int __quadmath_isinf_nsq (__float128 x);
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48
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49
68
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50
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51
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52
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53 /* Frankly, if you have __float128, you have 64-bit integers, right? */
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54 #ifndef UINT64_C
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55 # error "No way!"
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56 #endif
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57
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58
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59 /* Main union type we use to manipulate the floating-point type. */
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60 typedef union
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61 {
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62 __float128 value;
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63
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64 struct
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65 #ifdef __MINGW32__
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66 /* On mingw targets the ms-bitfields option is active by default.
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67 Therefore enforce gnu-bitfield style. */
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68 __attribute__ ((gcc_struct))
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69 #endif
68
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70 {
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71 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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72 unsigned negative:1;
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73 unsigned exponent:15;
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74 uint64_t mant_high:48;
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75 uint64_t mant_low:64;
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76 #else
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77 uint64_t mant_low:64;
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78 uint64_t mant_high:48;
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79 unsigned exponent:15;
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80 unsigned negative:1;
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81 #endif
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82 } ieee;
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83
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84 struct
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85 {
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86 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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87 uint64_t high;
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88 uint64_t low;
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89 #else
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90 uint64_t low;
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91 uint64_t high;
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92 #endif
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93 } words64;
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94
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95 struct
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96 {
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97 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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98 uint32_t w0;
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99 uint32_t w1;
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100 uint32_t w2;
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101 uint32_t w3;
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102 #else
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103 uint32_t w3;
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104 uint32_t w2;
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105 uint32_t w1;
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106 uint32_t w0;
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107 #endif
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108 } words32;
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109
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110 struct
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111 #ifdef __MINGW32__
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112 /* Make sure we are using gnu-style bitfield handling. */
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113 __attribute__ ((gcc_struct))
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114 #endif
68
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115 {
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116 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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117 unsigned negative:1;
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118 unsigned exponent:15;
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119 unsigned quiet_nan:1;
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120 uint64_t mant_high:47;
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121 uint64_t mant_low:64;
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122 #else
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123 uint64_t mant_low:64;
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124 uint64_t mant_high:47;
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125 unsigned quiet_nan:1;
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126 unsigned exponent:15;
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127 unsigned negative:1;
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128 #endif
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129 } nan;
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130
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131 } ieee854_float128;
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132
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133
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134 /* Get two 64 bit ints from a long double. */
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135 #define GET_FLT128_WORDS64(ix0,ix1,d) \
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136 do { \
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137 ieee854_float128 u; \
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138 u.value = (d); \
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139 (ix0) = u.words64.high; \
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140 (ix1) = u.words64.low; \
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141 } while (0)
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142
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143 /* Set a long double from two 64 bit ints. */
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parents:
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144 #define SET_FLT128_WORDS64(d,ix0,ix1) \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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145 do { \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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146 ieee854_float128 u; \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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147 u.words64.high = (ix0); \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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148 u.words64.low = (ix1); \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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149 (d) = u.value; \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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150 } while (0)
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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151
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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152 /* Get the more significant 64 bits of a long double mantissa. */
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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153 #define GET_FLT128_MSW64(v,d) \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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154 do { \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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155 ieee854_float128 u; \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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156 u.value = (d); \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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157 (v) = u.words64.high; \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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158 } while (0)
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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159
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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160 /* Set the more significant 64 bits of a long double mantissa from an int. */
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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161 #define SET_FLT128_MSW64(d,v) \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
162 do { \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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163 ieee854_float128 u; \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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164 u.value = (d); \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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165 u.words64.high = (v); \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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166 (d) = u.value; \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
167 } while (0)
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
168
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 /* Get the least significant 64 bits of a long double mantissa. */
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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170 #define GET_FLT128_LSW64(v,d) \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
171 do { \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
172 ieee854_float128 u; \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
173 u.value = (d); \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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174 (v) = u.words64.low; \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
175 } while (0)
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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176
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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177
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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178 #define IEEE854_FLOAT128_BIAS 0x3fff
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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179
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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180 #define QUADFP_NAN 0
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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181 #define QUADFP_INFINITE 1
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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182 #define QUADFP_ZERO 2
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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183 #define QUADFP_SUBNORMAL 3
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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184 #define QUADFP_NORMAL 4
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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185 #define fpclassifyq(x) \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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186 __builtin_fpclassify (QUADFP_NAN, QUADFP_INFINITE, QUADFP_NORMAL, \
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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187 QUADFP_SUBNORMAL, QUADFP_ZERO, x)
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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188
111
kono
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189 #ifndef math_opt_barrier
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190 # define math_opt_barrier(x) \
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191 ({ __typeof (x) __x = (x); __asm ("" : "+m" (__x)); __x; })
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192 # define math_force_eval(x) \
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193 ({ __typeof (x) __x = (x); __asm __volatile__ ("" : : "m" (__x)); })
68
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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194 #endif
111
kono
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195
kono
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196 /* math_narrow_eval reduces its floating-point argument to the range
kono
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197 and precision of its semantic type. (The original evaluation may
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198 still occur with excess range and precision, so the result may be
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199 affected by double rounding.) */
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200 #define math_narrow_eval(x) (x)
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201
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202 /* If X (which is not a NaN) is subnormal, force an underflow
kono
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203 exception. */
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204 #define math_check_force_underflow(x) \
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205 do \
kono
parents: 68
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206 { \
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207 __float128 force_underflow_tmp = (x); \
kono
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208 if (fabsq (force_underflow_tmp) < FLT128_MIN) \
kono
parents: 68
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209 { \
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210 __float128 force_underflow_tmp2 \
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211 = force_underflow_tmp * force_underflow_tmp; \
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212 math_force_eval (force_underflow_tmp2); \
kono
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213 } \
kono
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214 } \
kono
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215 while (0)
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216 /* Likewise, but X is also known to be nonnegative. */
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217 #define math_check_force_underflow_nonneg(x) \
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218 do \
kono
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219 { \
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220 __float128 force_underflow_tmp = (x); \
kono
parents: 68
diff changeset
221 if (force_underflow_tmp < FLT128_MIN) \
kono
parents: 68
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222 { \
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223 __float128 force_underflow_tmp2 \
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224 = force_underflow_tmp * force_underflow_tmp; \
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225 math_force_eval (force_underflow_tmp2); \
kono
parents: 68
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226 } \
kono
parents: 68
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227 } \
kono
parents: 68
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228 while (0)
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229
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230 #endif