1/* _Float128 overrides for building ldbl-128 as _Float128.
2 Copyright (C) 2017-2018 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 <http://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 <ieee754_float128.h>
33#define ieee854_long_double_shape_type ieee854_float128_shape_type
34#define ieee854_long_double ieee854_float128
35
36#undef GET_LDOUBLE_LSW64
37#undef GET_LDOUBLE_MSW64
38#undef GET_LDOUBLE_WORDS64
39#undef SET_LDOUBLE_LSW64
40#undef SET_LDOUBLE_MSW64
41#undef SET_LDOUBLE_WORDS64
42#define GET_LDOUBLE_LSW64(x,y) GET_FLOAT128_LSW64 (x, y)
43#define GET_LDOUBLE_MSW64(x,y) GET_FLOAT128_MSW64 (x, y)
44#define GET_LDOUBLE_WORDS64(x,y,z) GET_FLOAT128_WORDS64 (x, y, z)
45#define SET_LDOUBLE_LSW64(x,y) SET_FLOAT128_LSW64 (x, y)
46#define SET_LDOUBLE_MSW64(x,y) SET_FLOAT128_MSW64 (x, y)
47#define SET_LDOUBLE_WORDS64(x,y,z) SET_FLOAT128_WORDS64 (x, y, z)
48
49#undef IEEE854_LONG_DOUBLE_BIAS
50#define IEEE854_LONG_DOUBLE_BIAS IEEE854_FLOAT128_BIAS
51
52#ifdef SET_RESTORE_ROUNDF128
53# undef SET_RESTORE_ROUNDL
54# define SET_RESTORE_ROUNDL(RM) SET_RESTORE_ROUNDF128 (RM)
55#endif
56
57#ifdef libc_feholdexcept_setroundf128
58# undef libc_feholdexcept_setroundl
59# define libc_feholdexcept_setroundl(ENV, RM) \
60 libc_feholdexcept_setroundf128 (ENV, RM)
61#endif
62
63#ifdef libc_feupdateenv_testf128
64# undef libc_feupdateenv_testl
65# define libc_feupdateenv_testl(ENV, EX) libc_feupdateenv_testf128 (ENV, EX)
66#endif
67
68/* misc macros from the header below. */
69#include <fix-fp-int-convert-overflow.h>
70#undef FIX_LDBL_LONG_CONVERT_OVERFLOW
71#undef FIX_LDBL_LLONG_CONVERT_OVERFLOW
72#define FIX_LDBL_LONG_CONVERT_OVERFLOW FIX_FLT128_LONG_CONVERT_OVERFLOW
73#define FIX_LDBL_LLONG_CONVERT_OVERFLOW FIX_FLT128_LLONG_CONVERT_OVERFLOW
74
75
76/* float.h constants. */
77#include <float.h>
78#undef LDBL_DIG
79#undef LDBL_EPSILON
80#undef LDBL_MANT_DIG
81#undef LDBL_MAX
82#undef LDBL_MAX_10_EXP
83#undef LDBL_MAX_EXP
84#undef LDBL_MIN
85#undef LDBL_MIN_10_EXP
86#undef LDBL_MIN_EXP
87#undef LDBL_TRUE_MIN
88#define LDBL_DIG FLT128_DIG
89#define LDBL_EPSILON FLT128_EPSILON
90#define LDBL_MANT_DIG FLT128_MANT_DIG
91#define LDBL_MAX FLT128_MAX
92#define LDBL_MAX_10_EXP FLT128_MAX_10_EXP
93#define LDBL_MAX_EXP FLT128_MAX_EXP
94#define LDBL_MIN FLT128_MIN
95#define LDBL_MIN_10_EXP FLT128_MIN_10_EXP
96#define LDBL_MIN_EXP FLT128_MIN_EXP
97#define LDBL_TRUE_MIN FLT128_TRUE_MIN
98
99
100/* math.h GNU constants. */
101#undef M_El
102#undef M_LOG2El
103#undef M_LOG10El
104#undef M_LN2l
105#undef M_LN10l
106#undef M_PIl
107#undef M_PI_2l
108#undef M_PI_4l
109#undef M_1_PIl
110#undef M_2_PIl
111#undef M_2_SQRTPIl
112#undef M_SQRT2l
113#undef M_SQRT1_2l
114#define M_El M_Ef128
115#define M_LOG2El M_LOG2Ef128
116#define M_LOG10El M_LOG10Ef128
117#define M_LN2l M_LN2f128
118#define M_LN10l M_LN10f128
119#define M_PIl M_PIf128
120#define M_PI_2l M_PI_2f128
121#define M_PI_4l M_PI_4f128
122#define M_1_PIl M_1_PIf128
123#define M_2_PIl M_2_PIf128
124#define M_2_SQRTPIl M_2_SQRTPIf128
125#define M_SQRT2l M_SQRT2f128
126#define M_SQRT1_2l M_SQRT1_2f128
127
128
129#include <libm-alias-ldouble.h>
130#include <libm-alias-float128.h>
131#undef libm_alias_ldouble_r
132#define libm_alias_ldouble_r(from, to, r) libm_alias_float128_r (from, to, r)
133
134
135#include <math/math-narrow.h>
136#undef libm_alias_float_ldouble
137#define libm_alias_float_ldouble(func) libm_alias_float32_float128 (func)
138#undef libm_alias_double_ldouble
139#define libm_alias_double_ldouble(func) libm_alias_float64_float128 (func)
140
141
142/* IEEE function renames. */
143#define __ieee754_acoshl __ieee754_acoshf128
144#define __ieee754_acosl __ieee754_acosf128
145#define __ieee754_asinhl __ieee754_asinhf128
146#define __ieee754_asinl __ieee754_asinf128
147#define __ieee754_atan2l __ieee754_atan2f128
148#define __ieee754_atanhl __ieee754_atanhf128
149#define __ieee754_coshl __ieee754_coshf128
150#define __ieee754_cosl __ieee754_cosf128
151#define __ieee754_exp10l __ieee754_exp10f128
152#define __ieee754_exp2l __ieee754_exp2f128
153#define __ieee754_expl __ieee754_expf128
154#define __ieee754_fmodl __ieee754_fmodf128
155#define __ieee754_gammal_r __ieee754_gammaf128_r
156#define __ieee754_hypotl __ieee754_hypotf128
157#define __ieee754_ilogbl __ieee754_ilogbf128
158#define __ieee754_j0l __ieee754_j0f128
159#define __ieee754_j1l __ieee754_j1f128
160#define __ieee754_jnl __ieee754_jnf128
161#define __ieee754_lgammal_r __ieee754_lgammaf128_r
162#define __ieee754_log10l __ieee754_log10f128
163#define __ieee754_log2l __ieee754_log2f128
164#define __ieee754_logl __ieee754_logf128
165#define __ieee754_powl __ieee754_powf128
166#define __ieee754_rem_pio2l __ieee754_rem_pio2f128
167#define __ieee754_remainderl __ieee754_remainderf128
168#define __ieee754_sinhl __ieee754_sinhf128
169#define __ieee754_sqrtl __ieee754_sqrtf128
170#define __ieee754_y0l __ieee754_y0f128
171#define __ieee754_y1l __ieee754_y1f128
172#define __ieee754_ynl __ieee754_ynf128
173
174
175/* finite math entry points. */
176#define __acoshl_finite __acoshf128_finite
177#define __acosl_finite __acosf128_finite
178#define __asinl_finite __asinf128_finite
179#define __atan2l_finite __atan2f128_finite
180#define __atanhl_finite __atanhf128_finite
181#define __coshl_finite __coshf128_finite
182#define __cosl_finite __cosf128_finite
183#define __exp10l_finite __exp10f128_finite
184#define __exp2l_finite __exp2f128_finite
185#define __expl_finite __expf128_finite
186#define __fmodl_finite __fmodf128_finite
187#define __hypotl_finite __hypotf128_finite
188#define __ilogbl_finite __ilogbf128_finite
189#define __j0l_finite __j0f128_finite
190#define __j1l_finite __j1f128_finite
191#define __jnl_finite __jnf128_finite
192#define __lgammal_r_finite __lgammaf128_r_finite
193#define __log10l_finite __log10f128_finite
194#define __log2l_finite __log2f128_finite
195#define __logl_finite __logf128_finite
196#define __powl_finite __powf128_finite
197#define __remainderl_finite __remainderf128_finite
198#define __sinhl_finite __sinhf128_finite
199#define __y0l_finite __y0f128_finite
200#define __y1l_finite __y1f128_finite
201#define __ynl_finite __ynf128_finite
202
203
204/* internal function names. */
205#define __asinhl __asinhf128
206#define __atanl __atanf128
207#define __cbrtl __cbrtf128
208#define __ceill __ceilf128
209#define __copysignl __copysignf128
210#define __cosl __cosf128
211#define __erfcl __erfcf128
212#define __erfl __erff128
213#define __expl __expf128
214#define __expm1l __expm1f128
215#define __fabsl __fabsf128
216#define __fdiml __fdimf128
217#define __finitel __finitef128
218#define __floorl __floorf128
219#define __fmal __fmaf128
220#define __fmaxl __fmaxf128
221#define __fminl __fminf128
222#define __fpclassifyl __fpclassifyf128
223#define __frexpl __frexpf128
224#define __gammal_r_finite __gammaf128_r_finite
225#define __getpayloadl __getpayloadf128
226#define __isinfl __isinff128
227#define __isnanl __isnanf128
228#define __issignalingl __issignalingf128
229#define __ldexpl __ldexpf128
230#define __llrintl __llrintf128
231#define __llroundl __llroundf128
232#define __log1pl __log1pf128
233#define __logbl __logbf128
234#define __logl __logf128
235#define __lrintl __lrintf128
236#define __lroundl __lroundf128
237#define __modfl __modff128
238#define __nearbyintl __nearbyintf128
239#define __nextafterl __nextafterf128
240#define __nextdownl __nextdownf128
241#define __nextupl __nextupf128
242#define __remquol __remquof128
243#define __rintl __rintf128
244#define __roundevenl __roundevenf128
245#define __roundl __roundf128
246#define __scalblnl __scalblnf128
247#define __scalbnl __scalbnf128
248#define __signbitl __signbitf128
249#define __sincosl __sincosf128
250#define __sinl __sinf128
251#define __sqrtl __sqrtf128
252#define __tanhl __tanhf128
253#define __tanl __tanf128
254#define __totalorderl __totalorderf128
255#define __totalordermagl __totalordermagf128
256#define __truncl __truncf128
257#define __x2y2m1l __x2y2m1f128
258
259#define __faddl __f32addf128
260#define __daddl __f64addf128
261#define __fdivl __f32divf128
262#define __ddivl __f64divf128
263#define __fmull __f32mulf128
264#define __dmull __f64mulf128
265#define __fsubl __f32subf128
266#define __dsubl __f64subf128
267
268/* __nexttowardf128 is not _Float128 API. */
269#define __nexttowardl __nexttowardf128_do_not_use
270#define nexttowardl nexttowardf128_do_not_use
271
272
273/* public entry points. */
274#define asinhl asinhf128
275#define atanl atanf128
276#define cbrtl cbrtf128
277#define ceill ceilf128
278#define copysignl copysignf128
279#define cosl cosf128
280#define erfcl erfcf128
281#define erfl erff128
282#define expl expf128
283#define expm1l expm1f128
284#define fabsl fabsf128
285#define fdiml fdimf128
286#define finitel finitef128_do_not_use
287#define floorl floorf128
288#define fmal fmaf128
289#define fmaxl fmaxf128
290#define fminl fminf128
291#define frexpl frexpf128
292#define getpayloadl getpayloadf128
293#define isinfl isinff128_do_not_use
294#define isnanl isnanf128_do_not_use
295#define ldexpl ldexpf128
296#define llrintl llrintf128
297#define llroundl llroundf128
298#define log1pl log1pf128
299#define logbl logbf128
300#define logl logf128
301#define lrintl lrintf128
302#define lroundl lroundf128
303#define modfl modff128
304#define nanl nanf128
305#define nearbyintl nearbyintf128
306#define nextafterl nextafterf128
307#define nextdownl nextdownf128
308#define nextupl nextupf128
309#define remquol remquof128
310#define rintl rintf128
311#define roundevenl roundevenf128
312#define roundl roundf128
313#define scalbnl scalbnf128
314#define sincosl sincosf128
315#define sinl sinf128
316#define sqrtl sqrtf128
317#define tanhl tanhf128
318#define tanl tanf128
319#define totalorderl totalorderf128
320#define totalordermagl totalordermagf128
321#define truncl truncf128
322
323
324/* misc internal renames. */
325#define __builtin_fmal __builtin_fmaf128
326#define __expl_table __expf128_table
327#define __gamma_productl __gamma_productf128
328#define __kernel_cosl __kernel_cosf128
329#define __kernel_rem_pio2l __kernel_rem_pio2f128
330#define __kernel_sincosl __kernel_sincosf128
331#define __kernel_sinl __kernel_sinf128
332#define __kernel_tanl __kernel_tanf128
333#define __lgamma_negl __lgamma_negf128
334#define __lgamma_productl __lgamma_productf128
335#define __mpn_extract_long_double __mpn_extract_float128
336#define __sincosl_table __sincosf128_table
337#define mul_splitl mul_splitf128
338
339/* Builtin renames. */
340#define __builtin_copysignl __builtin_copysignf128
341#define __builtin_signbitl __builtin_signbit
342
343/* Get the constant suffix from bits/floatn-compat.h. */
344#define L(x) __f128 (x)
345
346static inline void
347mul_splitf128 (_Float128 *hi, _Float128 *lo, _Float128 x, _Float128 y)
348{
349#ifdef __FP_FAST_FMAF128
350 /* Fast built-in fused multiply-add. */
351 *hi = x * y;
352 *lo = __builtin_fmal (x, y, -*hi);
353#else
354 /* Apply Dekker's algorithm. */
355 *hi = x * y;
356# define C ((1LL << (FLT128_MANT_DIG + 1) / 2) + 1)
357 _Float128 x1 = x * C;
358 _Float128 y1 = y * C;
359# undef C
360 x1 = (x - x1) + x1;
361 y1 = (y - y1) + y1;
362 _Float128 x2 = x - x1;
363 _Float128 y2 = y - y1;
364 *lo = (((x1 * y1 - *hi) + x1 * y2) + x2 * y1) + x2 * y2;
365#endif
366}
367