sysdeps/ieee754/float128/float128_private.h

   1 /* _Float128 overrides for building ldbl-128 as _Float128.
   2    Copyright (C) 2017-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 /* This must be included before the function renames below.  */
  20 #include <gmp.h>
  21 #include <math.h>
  22 #undef HUGE_VALL
  23 #define HUGE_VALL HUGE_VAL_F128
  24 #include <math/mul_splitl.h>
  25
  26 /* This must be included before the renames of types and macros from
  27    it.  */
  28 #include <ieee754.h>
  29
  30 /* Renames derived from math_private.h.  */
  31 #include <math_private.h>
  32 #include <fenv_private.h>
  33 #include <ieee754_float128.h>
  34 #define ieee854_long_double_shape_type ieee854_float128_shape_type
  35 #define ieee854_long_double ieee854_float128
  36
  37 #undef GET_LDOUBLE_LSW64
  38 #undef GET_LDOUBLE_MSW64
  39 #undef GET_LDOUBLE_WORDS64
  40 #undef SET_LDOUBLE_LSW64
  41 #undef SET_LDOUBLE_MSW64
  42 #undef SET_LDOUBLE_WORDS64
  43 #define GET_LDOUBLE_LSW64(x,y) GET_FLOAT128_LSW64 (x, y)
  44 #define GET_LDOUBLE_MSW64(x,y) GET_FLOAT128_MSW64 (x, y)
  45 #define GET_LDOUBLE_WORDS64(x,y,z) GET_FLOAT128_WORDS64 (x, y, z)
  46 #define SET_LDOUBLE_LSW64(x,y) SET_FLOAT128_LSW64 (x, y)
  47 #define SET_LDOUBLE_MSW64(x,y) SET_FLOAT128_MSW64 (x, y)
  48 #define SET_LDOUBLE_WORDS64(x,y,z) SET_FLOAT128_WORDS64 (x, y, z)
  49
  50 #undef IEEE854_LONG_DOUBLE_BIAS
  51 #define IEEE854_LONG_DOUBLE_BIAS IEEE854_FLOAT128_BIAS
  52
  53 #ifdef SET_RESTORE_ROUNDF128
  54 # undef SET_RESTORE_ROUNDL
  55 # define SET_RESTORE_ROUNDL(RM) SET_RESTORE_ROUNDF128 (RM)
  56 #endif
  57
  58 #ifdef libc_feholdexcept_setroundf128
  59 # undef libc_feholdexcept_setroundl
  60 # define libc_feholdexcept_setroundl(ENV, RM)   \
  61   libc_feholdexcept_setroundf128 (ENV, RM)
  62 #endif
  63
  64 #ifdef libc_feupdateenv_testf128
  65 # undef libc_feupdateenv_testl
  66 # define libc_feupdateenv_testl(ENV, EX) libc_feupdateenv_testf128 (ENV, EX)
  67 #endif
  68
  69 /* misc macros from the header below.  */
  70 #include <fix-fp-int-convert-overflow.h>
  71 #undef FIX_LDBL_LONG_CONVERT_OVERFLOW
  72 #undef FIX_LDBL_LLONG_CONVERT_OVERFLOW
  73 #define FIX_LDBL_LONG_CONVERT_OVERFLOW FIX_FLT128_LONG_CONVERT_OVERFLOW
  74 #define FIX_LDBL_LLONG_CONVERT_OVERFLOW FIX_FLT128_LLONG_CONVERT_OVERFLOW
  75
  76
  77 /* float.h constants.  */
  78 #include <float.h>
  79 #undef LDBL_DIG
  80 #undef LDBL_EPSILON
  81 #undef LDBL_MANT_DIG
  82 #undef LDBL_MAX
  83 #undef LDBL_MAX_10_EXP
  84 #undef LDBL_MAX_EXP
  85 #undef LDBL_MIN
  86 #undef LDBL_MIN_10_EXP
  87 #undef LDBL_MIN_EXP
  88 #undef LDBL_TRUE_MIN
  89 #define LDBL_DIG FLT128_DIG
  90 #define LDBL_EPSILON FLT128_EPSILON
  91 #define LDBL_MANT_DIG FLT128_MANT_DIG
  92 #define LDBL_MAX FLT128_MAX
  93 #define LDBL_MAX_10_EXP FLT128_MAX_10_EXP
  94 #define LDBL_MAX_EXP FLT128_MAX_EXP
  95 #define LDBL_MIN FLT128_MIN
  96 #define LDBL_MIN_10_EXP FLT128_MIN_10_EXP
  97 #define LDBL_MIN_EXP FLT128_MIN_EXP
  98 #define LDBL_TRUE_MIN FLT128_TRUE_MIN
  99
 100
 101 /* math.h GNU constants.  */
 102 #undef M_El
 103 #undef M_LOG2El
 104 #undef M_LOG10El
 105 #undef M_LN2l
 106 #undef M_LN10l
 107 #undef M_PIl
 108 #undef M_PI_2l
 109 #undef M_PI_4l
 110 #undef M_1_PIl
 111 #undef M_2_PIl
 112 #undef M_2_SQRTPIl
 113 #undef M_SQRT2l
 114 #undef M_SQRT1_2l
 115 #define M_El M_Ef128
 116 #define M_LOG2El M_LOG2Ef128
 117 #define M_LOG10El M_LOG10Ef128
 118 #define M_LN2l M_LN2f128
 119 #define M_LN10l M_LN10f128
 120 #define M_PIl M_PIf128
 121 #define M_PI_2l M_PI_2f128
 122 #define M_PI_4l M_PI_4f128
 123 #define M_1_PIl M_1_PIf128
 124 #define M_2_PIl M_2_PIf128
 125 #define M_2_SQRTPIl M_2_SQRTPIf128
 126 #define M_SQRT2l M_SQRT2f128
 127 #define M_SQRT1_2l M_SQRT1_2f128
 128
 129
 130 #include <libm-alias-ldouble.h>
 131 #include <libm-alias-float128.h>
 132 #undef libm_alias_ldouble_r
 133 #define libm_alias_ldouble_r(from, to, r) libm_alias_float128_r (from, to, r)
 134
 135
 136 #include <math/math-narrow.h>
 137 #undef libm_alias_float_ldouble
 138 #define libm_alias_float_ldouble(func) libm_alias_float32_float128 (func)
 139 #undef libm_alias_double_ldouble
 140 #define libm_alias_double_ldouble(func) libm_alias_float64_float128 (func)
 141 #undef libm_alias_ldouble_narrow
 142 #define libm_alias_ldouble_narrow(from, to)     \
 143   libm_alias_float128_narrow (from, to)
 144
 145 #include <math-use-builtins.h>
 146 #undef USE_NEARBYINTL_BUILTIN
 147 #define USE_NEARBYINTL_BUILTIN USE_NEARBYINTF128_BUILTIN
 148 #undef USE_RINTL_BUILTIN
 149 #define USE_RINTL_BUILTIN USE_RINTF128_BUILTIN
 150 #undef USE_FLOORL_BUILTIN
 151 #define USE_FLOORL_BUILTIN USE_FLOORF128_BUILTIN
 152 #undef USE_CEILL_BUILTIN
 153 #define USE_CEILL_BUILTIN USE_CEILF128_BUILTIN
 154 #undef USE_TRUNCL_BUILTIN
 155 #define USE_TRUNCL_BUILTIN USE_TRUNCF128_BUILTIN
 156 #undef USE_ROUNDL_BUILTIN
 157 #define USE_ROUNDL_BUILTIN USE_ROUNDF128_BUILTIN
 158 #undef USE_ROUNDEVENL_BUILTIN
 159 #define USE_ROUNDEVENL_BUILTIN USE_ROUNDEVENF128_BUILTIN
 160 #undef USE_COPYSIGNL_BUILTIN
 161 #define USE_COPYSIGNL_BUILTIN USE_COPYSIGNF128_BUILTIN
 162 #undef USE_FMAL_BUILTIN
 163 #define USE_FMAL_BUILTIN USE_FMAF128_BUILTIN
 164 #undef USE_LRINTL_BUILTIN
 165 #define USE_LRINTL_BUILTIN USE_LRINTF128_BUILTIN
 166 #undef USE_LLRINTL_BUILTIN
 167 #define USE_LLRINTL_BUILTIN USE_LLRINTF128_BUILTIN
 168 #undef USE_LOGBL_BUILTIN
 169 #define USE_LOGBL_BUILTIN USE_LOGBF128_BUILTIN
 170
 171 /* IEEE function renames.  */
 172 #define __ieee754_acoshl __ieee754_acoshf128
 173 #define __ieee754_acosl __ieee754_acosf128
 174 #define __ieee754_asinhl __ieee754_asinhf128
 175 #define __ieee754_asinl __ieee754_asinf128
 176 #define __ieee754_atan2l __ieee754_atan2f128
 177 #define __ieee754_atanhl __ieee754_atanhf128
 178 #define __ieee754_coshl __ieee754_coshf128
 179 #define __ieee754_cosl __ieee754_cosf128
 180 #define __ieee754_exp10l __ieee754_exp10f128
 181 #define __ieee754_exp2l __ieee754_exp2f128
 182 #define __ieee754_expl __ieee754_expf128
 183 #define __ieee754_fmodl __ieee754_fmodf128
 184 #define __ieee754_gammal_r __ieee754_gammaf128_r
 185 #define __ieee754_hypotl __ieee754_hypotf128
 186 #define __ieee754_ilogbl __ieee754_ilogbf128
 187 #define __ieee754_j0l __ieee754_j0f128
 188 #define __ieee754_j1l __ieee754_j1f128
 189 #define __ieee754_jnl __ieee754_jnf128
 190 #define __ieee754_lgammal_r __ieee754_lgammaf128_r
 191 #define __ieee754_log10l __ieee754_log10f128
 192 #define __ieee754_log2l __ieee754_log2f128
 193 #define __ieee754_logl __ieee754_logf128
 194 #define __ieee754_powl __ieee754_powf128
 195 #define __ieee754_rem_pio2l __ieee754_rem_pio2f128
 196 #define __ieee754_remainderl __ieee754_remainderf128
 197 #define __ieee754_sinhl __ieee754_sinhf128
 198 #define __ieee754_sqrtl __ieee754_sqrtf128
 199 #define __ieee754_y0l __ieee754_y0f128
 200 #define __ieee754_y1l __ieee754_y1f128
 201 #define __ieee754_ynl __ieee754_ynf128
 202
 203
 204 /* finite math entry points.  */
 205 #define __acoshl_finite __acoshf128_finite
 206 #define __acosl_finite __acosf128_finite
 207 #define __asinl_finite __asinf128_finite
 208 #define __atan2l_finite __atan2f128_finite
 209 #define __atanhl_finite __atanhf128_finite
 210 #define __coshl_finite __coshf128_finite
 211 #define __cosl_finite __cosf128_finite
 212 #define __exp10l_finite __exp10f128_finite
 213 #define __exp2l_finite __exp2f128_finite
 214 #define __expl_finite __expf128_finite
 215 #define __fmodl_finite __fmodf128_finite
 216 #define __hypotl_finite __hypotf128_finite
 217 #define __ilogbl_finite __ilogbf128_finite
 218 #define __j0l_finite __j0f128_finite
 219 #define __j1l_finite __j1f128_finite
 220 #define __jnl_finite __jnf128_finite
 221 #define __lgammal_r_finite __lgammaf128_r_finite
 222 #define __log10l_finite __log10f128_finite
 223 #define __log2l_finite __log2f128_finite
 224 #define __logl_finite __logf128_finite
 225 #define __powl_finite __powf128_finite
 226 #define __remainderl_finite __remainderf128_finite
 227 #define __sinhl_finite __sinhf128_finite
 228 #define __y0l_finite __y0f128_finite
 229 #define __y1l_finite __y1f128_finite
 230 #define __ynl_finite __ynf128_finite
 231
 232
 233 /* internal function names.  */
 234 #define __asinhl __asinhf128
 235 #define __atanl __atanf128
 236 #define __cbrtl __cbrtf128
 237 #define __ceill __ceilf128
 238 #define __copysignl __copysignf128
 239 #define __cosl __cosf128
 240 #define __erfcl __erfcf128
 241 #define __erfl __erff128
 242 #define __expl __expf128
 243 #define __expm1l __expm1f128
 244 #define __fabsl __fabsf128
 245 #define __fdiml __fdimf128
 246 #define __finitel __finitef128
 247 #define __floorl __floorf128
 248 #define __fmal __fmaf128
 249 #define __fmaxl __fmaxf128
 250 #define __fminl __fminf128
 251 #define __fpclassifyl __fpclassifyf128
 252 #define __frexpl __frexpf128
 253 #define __gammal_r_finite __gammaf128_r_finite
 254 #define __getpayloadl __getpayloadf128
 255 #define __isinfl __isinff128
 256 #define __isnanl __isnanf128
 257 #define __issignalingl __issignalingf128
 258 #define __ldexpl __ldexpf128
 259 #define __llrintl __llrintf128
 260 #define __llroundl __llroundf128
 261 #define __log1pl __log1pf128
 262 #define __logbl __logbf128
 263 #define __logl __logf128
 264 #define __lrintl __lrintf128
 265 #define __lroundl __lroundf128
 266 #define __modfl __modff128
 267 #define __nearbyintl __nearbyintf128
 268 #define __nextafterl __nextafterf128
 269 #define __nextdownl __nextdownf128
 270 #define __nextupl __nextupf128
 271 #define __remquol __remquof128
 272 #define __rintl __rintf128
 273 #define __roundevenl __roundevenf128
 274 #define __roundl __roundf128
 275 #define __scalblnl __scalblnf128
 276 #define __scalbnl __scalbnf128
 277 #define __signbitl __signbitf128
 278 #define __sincosl __sincosf128
 279 #define __sinl __sinf128
 280 #define __sqrtl __sqrtf128
 281 #define __tanhl __tanhf128
 282 #define __tanl __tanf128
 283 #define __totalorderl __totalorderf128
 284 #define __totalorder_compatl __totalorder_compatf128
 285 #define __totalordermagl __totalordermagf128
 286 #define __totalordermag_compatl __totalordermag_compatf128
 287 #define __truncl __truncf128
 288 #define __x2y2m1l __x2y2m1f128
 289
 290 #define __faddl __f32addf128
 291 #define __daddl __f64addf128
 292 #define __fdivl __f32divf128
 293 #define __ddivl __f64divf128
 294 #define __ffmal __f32fmaf128
 295 #define __dfmal __f64fmaf128
 296 #define __fmull __f32mulf128
 297 #define __dmull __f64mulf128
 298 #define __fsqrtl __f32sqrtf128
 299 #define __dsqrtl __f64sqrtf128
 300 #define __fsubl __f32subf128
 301 #define __dsubl __f64subf128
 302
 303 /* Used on __finite compat alias.  */
 304 #define __acosl __acosf128
 305 #define __acoshl __acoshf128
 306 #define __asinl __asinf128
 307 #define __atan2l __atan2f128
 308 #define __atanhl __atanhf128
 309 #define __coshl __coshf128
 310 #define __exp10l __exp10f128
 311 #define __expl __expf128
 312 #define __fmodl __fmodf128
 313 #define __gammal_r __gammaf128_r
 314 #define __hypotl __hypotf128
 315 #define __j0l __j0f128
 316 #define __j1l __j1f128
 317 #define __jnl __jnf128
 318 #define __lgammal_r __lgammaf128_r
 319 #define __log10l __log10f128
 320 #define __log2l __log2f128
 321 #define __logl __logf128
 322 #define __powl __powf128
 323 #define __remainderl __remainderf128
 324 #define __sinhl __sinhf128
 325 #define __y0l __y0f128
 326 #define __y1l __y1f128
 327 #define __ynl __ynf128
 328
 329 /* __nexttowardf128 is not _Float128 API. */
 330 #define __nexttowardl __nexttowardf128_do_not_use
 331 #define nexttowardl nexttowardf128_do_not_use
 332
 333
 334 /* public entry points.  */
 335 #define asinhl asinhf128
 336 #define atanl atanf128
 337 #define cbrtl cbrtf128
 338 #define ceill ceilf128
 339 #define copysignl copysignf128
 340 #define cosl cosf128
 341 #define erfcl erfcf128
 342 #define erfl erff128
 343 #define expl expf128
 344 #define expm1l expm1f128
 345 #define fabsl fabsf128
 346 #define fdiml fdimf128
 347 #define finitel finitef128_do_not_use
 348 #define floorl floorf128
 349 #define fmal fmaf128
 350 #define fmaxl fmaxf128
 351 #define fminl fminf128
 352 #define frexpl frexpf128
 353 #define getpayloadl getpayloadf128
 354 #define isinfl isinff128_do_not_use
 355 #define isnanl isnanf128_do_not_use
 356 #define ldexpl ldexpf128
 357 #define llrintl llrintf128
 358 #define llroundl llroundf128
 359 #define log1pl log1pf128
 360 #define logbl logbf128
 361 #define logp1l logp1f128
 362 #define logl logf128
 363 #define lrintl lrintf128
 364 #define lroundl lroundf128
 365 #define modfl modff128
 366 #define nanl nanf128
 367 #define nearbyintl nearbyintf128
 368 #define nextafterl nextafterf128
 369 #define nextdownl nextdownf128
 370 #define nextupl nextupf128
 371 #define remquol remquof128
 372 #define rintl rintf128
 373 #define roundevenl roundevenf128
 374 #define roundl roundf128
 375 #define scalbnl scalbnf128
 376 #define sincosl sincosf128
 377 #define sinl sinf128
 378 #define sqrtl sqrtf128
 379 #define tanhl tanhf128
 380 #define tanl tanf128
 381 #define totalorderl totalorderf128
 382 #define totalordermagl totalordermagf128
 383 #define truncl truncf128
 384
 385
 386 /* misc internal renames.  */
 387 #define __builtin_fmal __builtin_fmaf128
 388 #define __expl_table __expf128_table
 389 #define __gamma_productl __gamma_productf128
 390 #define __kernel_cosl __kernel_cosf128
 391 #define __kernel_rem_pio2l __kernel_rem_pio2f128
 392 #define __kernel_sincosl __kernel_sincosf128
 393 #define __kernel_sinl __kernel_sinf128
 394 #define __kernel_tanl __kernel_tanf128
 395 #define __lgamma_negl __lgamma_negf128
 396 #define __lgamma_productl __lgamma_productf128
 397 #define __mpn_extract_long_double __mpn_extract_float128
 398 #define __sincosl_table __sincosf128_table
 399 #define mul_splitl mul_splitf128
 400
 401 /* Builtin renames.  */
 402 #define __builtin_copysignl __builtin_copysignf128
 403 #define __builtin_signbitl __builtin_signbit
 404 #define __builtin_nearbyintl __builtin_nearbyintf128
 405 #define __builtin_rintl __builtin_rintf128
 406 #define __builtin_floorl __builtin_floorf128
 407 #define __builtin_ceill __builtin_ceilf128
 408 #define __builtin_truncl __builtin_truncf128
 409 #define __builtin_roundl __builtin_roundf128
 410 #define __builtin_roundevenl __builtin_roundevenf128
 411 #define __builtin_lrintl __builtin_lrintf128
 412 #define __builtin_llrintl __builtin_llrintf128
 413 #define __builtin_copysignl __builtin_copysignf128
 414 #define __builtin_fabsl __builtin_fabsf128
 415
 416 /* Get the constant suffix from bits/floatn-compat.h.  */
 417 #define L(x) __f128 (x)
 418
 419 static inline void
 420 mul_splitf128 (_Float128 *hi, _Float128 *lo, _Float128 x, _Float128 y)
 421 {
 422 #ifdef __FP_FAST_FMAF128
 423   /* Fast built-in fused multiply-add.  */
 424   *hi = x * y;
 425   *lo = __builtin_fmal (x, y, -*hi);
 426 #else
 427   /* Apply Dekker's algorithm.  */
 428   *hi = x * y;
 429 # define C ((1LL << (FLT128_MANT_DIG + 1) / 2) + 1)
 430   _Float128 x1 = x * C;
 431   _Float128 y1 = y * C;
 432 # undef C
 433   x1 = (x - x1) + x1;
 434   y1 = (y - y1) + y1;
 435   _Float128 x2 = x - x1;
 436   _Float128 y2 = y - y1;
 437   *lo = (((x1 * y1 - *hi) + x1 * y2) + x2 * y1) + x2 * y2;
 438 #endif
 439 }