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gcc/libquadmath/quadmath.h
Joseph Myers 4239f144ce Update most of libquadmath/math/ from glibc, automate update (PR libquadmath/68686). 
libquadmath sources are mostly based on glibc sources at present, but
derived from them by a manual editing / substitution process and with
subsequent manual merges.  The manual effort involved in merges means
they are sometimes incomplete and long-delayed.

Since libquadmath was first created, glibc's support for this format
has undergone significant changes so that it can also be used in glibc
to provide *f128 functions for the _Float128 type from TS 18661-3.
This makes it significantly easier to use it for libquadmath in a more
automated fashion, since glibc has a float128_private.h header that
redefines many identifiers as macros as needed for building *f128
functions.

Simply using float128_private.h directly in libquadmath, with
unmodified glibc sources except for changing function names in that
one header to be *q instead of *f128, would be tricky, given its
dependence on lots of other glibc-internal headers (whereas
libquadmath supports non-glibc systems), and also given how some libm
functions in glibc are built from type-generic templates using a
further set of macros rather than from separate function
implementations for each type.

So instead this patch adds a script update-quadmath.py to convert
glibc sources into libquadmath ones, and the script reads
float128_private.h to identify many of the substitutions it should
make.  quadmath-imp.h is updated with various new internal
definitions, taken from glibc as needed; this is the main place
expected to need updating manually when subsequent merges from glibc
are done using the script.  No attempt is made to make the script
output match the details of existing formatting, although the
differences are of a size that makes a rough comparison (ignoring
whitespace) possible.

Two new public interfaces are added to libquadmath, exp2q and
issignalingq, at a new QUADMATH_1.2 symbol version, since those
interfaces are used internally by some of the glibc sources being
merged into libquadmath; although there is a new symbol version, no
change however is made to the libtool version in the libtool-version
file.  Although there are various other interfaces now in glibc libm
but not in libquadmath, this patch does nothing to add such interfaces
(although adding many of them would in fact be easy to do, given the
script).

One internal file (not providing any public interfaces),
math/isinf_nsq.c, is removed, as no longer used by anything in
libquadmath after the merge.

Conditionals in individual source files on <fenv.h> availability or
features are moved into quadmath-imp.h (providing trivial macro
versions of the functions if real implementations aren't available),
to simplify the substitutions in individual source files.  Note
however that I haven't tested for any configurations lacking <fenv.h>,
so further changes could well be needed there.

Two files in libquadmath/math/ are based on glibc sources but not
updated in this patch: fmaq.c and rem_pio2q.c.  Both could be updated
after further changes to the script (and quadmath-imp.h as needed); in
the case of rem_pio2q.c, based on two separate glibc source files,
those separate files would naturally be split out into separate
libquadmath source files in the process (as done in this patch with
expq_table.h and tanq_kernel.c, where previously two glibc source
files had been merged into one libquadmath source file).  complex.c,
nanq.c and sqrtq.c are not based on glibc sources (though four of the
(trivial) functions in complex.c could readily be replaced by instead
using the four corresponding files from glibc, if desired).

libquadmath also has printf/ and strtod/ sources based on glibc, also
mostly not updated for a long time.  Again the script could no doubt
be made to generate those automatically, although that would be a
larger change (effectively some completely separate logic in the
script, not sharing much if anything with the existing code).

Bootstrapped with no regressions on x86_64-pc-linux-gnu.

	PR libquadmath/68686
	* Makefile.am: (libquadmath_la_SOURCES): Remove math/isinf_nsq.c.
	Add math/exp2q.c math/issignalingq.c math/lgammaq_neg.c
	math/lgammaq_product.c math/tanq_kernel.c math/tgammaq_product.c
	math/casinhq_kernel.c.
	* Makefile.in: Regenerate.
	* libquadmath.texi (exp2q, issignalingq): Document.
	* quadmath-imp.h: Include <errno.h>, <limits.h>, <stdbool.h> and
	<fenv.h>.
	(HIGH_ORDER_BIT_IS_SET_FOR_SNAN, FIX_FLT128_LONG_CONVERT_OVERFLOW)
	(FIX_FLT128_LLONG_CONVERT_OVERFLOW, __quadmath_kernel_tanq)
	(__quadmath_gamma_productq, __quadmath_gammaq_r)
	(__quadmath_lgamma_negq, __quadmath_lgamma_productq)
	(__quadmath_lgammaq_r, __quadmath_kernel_casinhq, mul_splitq)
	(math_check_force_underflow_complex, __glibc_likely)
	(__glibc_unlikely, struct rm_ctx, SET_RESTORE_ROUNDF128)
	(libc_feholdsetround_ctx, libc_feresetround_ctx): New.
	(feraiseexcept, fenv_t, feholdexcept, fesetround, feupdateenv)
	(fesetenv, fetestexcept, feclearexcept): Define if not supported
	through <fenv.h>.
	(__quadmath_isinf_nsq): Remove.
	* quadmath.h (exp2q, issignalingq): New.
	* quadmath.map (QUADMATH_1.2): New.
	* quadmath_weak.h (exp2q, issignalingq): New.
	* update-quadmath.py: New file.
	* math/isinf_nsq.c: Remove file.
	* math/casinhq_kernel.c, math/exp2q.c, math/expq_table.h,
	math/issignalingq.c, math/lgammaq_neg.c, math/lgammaq_product.c,
	math/tanq_kernel.c, math/tgammaq_product.c: New files.  Generated
	from glibc sources with update-quadmath.py.
	* math/acoshq.c, math/acosq.c, math/asinhq.c, math/asinq.c,
	math/atan2q.c, math/atanhq.c, math/atanq.c, math/cacoshq.c,
	math/cacosq.c, math/casinhq.c, math/casinq.c, math/catanhq.c,
	math/catanq.c, math/cbrtq.c, math/ccoshq.c, math/ceilq.c,
	math/cexpq.c, math/cimagq.c, math/clog10q.c, math/clogq.c,
	math/conjq.c, math/copysignq.c, math/coshq.c, math/cosq.c,
	math/cosq_kernel.c, math/cprojq.c, math/crealq.c, math/csinhq.c,
	math/csinq.c, math/csqrtq.c, math/ctanhq.c, math/ctanq.c,
	math/erfq.c, math/expm1q.c, math/expq.c, math/fabsq.c,
	math/fdimq.c, math/finiteq.c, math/floorq.c, math/fmaxq.c,
	math/fminq.c, math/fmodq.c, math/frexpq.c, math/hypotq.c,
	math/ilogbq.c, math/isinfq.c, math/isnanq.c, math/j0q.c,
	math/j1q.c, math/jnq.c, math/ldexpq.c, math/lgammaq.c,
	math/llrintq.c, math/llroundq.c, math/log10q.c, math/log1pq.c,
	math/log2q.c, math/logbq.c, math/logq.c, math/lrintq.c,
	math/lroundq.c, math/modfq.c, math/nearbyintq.c,
	math/nextafterq.c, math/powq.c, math/remainderq.c, math/remquoq.c,
	math/rintq.c, math/roundq.c, math/scalblnq.c, math/scalbnq.c,
	math/signbitq.c, math/sincos_table.c, math/sincosq.c,
	math/sincosq_kernel.c, math/sinhq.c, math/sinq.c,
	math/sinq_kernel.c, math/tanhq.c, math/tanq.c, math/tgammaq.c,
	math/truncq.c, math/x2y2m1q.c: Regenerate from glibc sources with
	update-quadmath.py.

From-SVN: r265822
2018-11-05 23:03:55 +00:00

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/* GCC Quad-Precision Math Library
Copyright (C) 2010, 2011 Free Software Foundation, Inc.
Written by Francois-Xavier Coudert <fxcoudert@gcc.gnu.org>
This file is part of the libquadmath library.
Libquadmath is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
Libquadmath is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with libquadmath; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
Boston, MA 02110-1301, USA. */
#ifndef QUADMATH_H
#define QUADMATH_H
#include <stdlib.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Define the complex type corresponding to __float128
("_Complex __float128" is not allowed) */
#if (!defined(_ARCH_PPC)) || defined(__LONG_DOUBLE_IEEE128__)
typedef _Complex float __attribute__((mode(TC))) __complex128;
#else
typedef _Complex float __attribute__((mode(KC))) __complex128;
#endif
#ifdef __cplusplus
# define __quadmath_throw throw ()
# define __quadmath_nth(fct) fct throw ()
#else
# define __quadmath_throw __attribute__((__nothrow__))
# define __quadmath_nth(fct) __attribute__((__nothrow__)) fct
#endif
/* Prototypes for real functions */
extern __float128 acosq (__float128) __quadmath_throw;
extern __float128 acoshq (__float128) __quadmath_throw;
extern __float128 asinq (__float128) __quadmath_throw;
extern __float128 asinhq (__float128) __quadmath_throw;
extern __float128 atanq (__float128) __quadmath_throw;
extern __float128 atanhq (__float128) __quadmath_throw;
extern __float128 atan2q (__float128, __float128) __quadmath_throw;
extern __float128 cbrtq (__float128) __quadmath_throw;
extern __float128 ceilq (__float128) __quadmath_throw;
extern __float128 copysignq (__float128, __float128) __quadmath_throw;
extern __float128 coshq (__float128) __quadmath_throw;
extern __float128 cosq (__float128) __quadmath_throw;
extern __float128 erfq (__float128) __quadmath_throw;
extern __float128 erfcq (__float128) __quadmath_throw;
extern __float128 exp2q (__float128) __quadmath_throw;
extern __float128 expq (__float128) __quadmath_throw;
extern __float128 expm1q (__float128) __quadmath_throw;
extern __float128 fabsq (__float128) __quadmath_throw;
extern __float128 fdimq (__float128, __float128) __quadmath_throw;
extern int finiteq (__float128) __quadmath_throw;
extern __float128 floorq (__float128) __quadmath_throw;
extern __float128 fmaq (__float128, __float128, __float128) __quadmath_throw;
extern __float128 fmaxq (__float128, __float128) __quadmath_throw;
extern __float128 fminq (__float128, __float128) __quadmath_throw;
extern __float128 fmodq (__float128, __float128) __quadmath_throw;
extern __float128 frexpq (__float128, int *) __quadmath_throw;
extern __float128 hypotq (__float128, __float128) __quadmath_throw;
extern int isinfq (__float128) __quadmath_throw;
extern int ilogbq (__float128) __quadmath_throw;
extern int isnanq (__float128) __quadmath_throw;
extern int issignalingq (__float128) __quadmath_throw;
extern __float128 j0q (__float128) __quadmath_throw;
extern __float128 j1q (__float128) __quadmath_throw;
extern __float128 jnq (int, __float128) __quadmath_throw;
extern __float128 ldexpq (__float128, int) __quadmath_throw;
extern __float128 lgammaq (__float128) __quadmath_throw;
extern long long int llrintq (__float128) __quadmath_throw;
extern long long int llroundq (__float128) __quadmath_throw;
extern __float128 logbq (__float128) __quadmath_throw;
extern __float128 logq (__float128) __quadmath_throw;
extern __float128 log10q (__float128) __quadmath_throw;
extern __float128 log2q (__float128) __quadmath_throw;
extern __float128 log1pq (__float128) __quadmath_throw;
extern long int lrintq (__float128) __quadmath_throw;
extern long int lroundq (__float128) __quadmath_throw;
extern __float128 modfq (__float128, __float128 *) __quadmath_throw;
extern __float128 nanq (const char *) __quadmath_throw;
extern __float128 nearbyintq (__float128) __quadmath_throw;
extern __float128 nextafterq (__float128, __float128) __quadmath_throw;
extern __float128 powq (__float128, __float128) __quadmath_throw;
extern __float128 remainderq (__float128, __float128) __quadmath_throw;
extern __float128 remquoq (__float128, __float128, int *) __quadmath_throw;
extern __float128 rintq (__float128) __quadmath_throw;
extern __float128 roundq (__float128) __quadmath_throw;
extern __float128 scalblnq (__float128, long int) __quadmath_throw;
extern __float128 scalbnq (__float128, int) __quadmath_throw;
extern int signbitq (__float128) __quadmath_throw;
extern void sincosq (__float128, __float128 *, __float128 *) __quadmath_throw;
extern __float128 sinhq (__float128) __quadmath_throw;
extern __float128 sinq (__float128) __quadmath_throw;
extern __float128 sqrtq (__float128) __quadmath_throw;
extern __float128 tanq (__float128) __quadmath_throw;
extern __float128 tanhq (__float128) __quadmath_throw;
extern __float128 tgammaq (__float128) __quadmath_throw;
extern __float128 truncq (__float128) __quadmath_throw;
extern __float128 y0q (__float128) __quadmath_throw;
extern __float128 y1q (__float128) __quadmath_throw;
extern __float128 ynq (int, __float128) __quadmath_throw;
/* Prototypes for complex functions */
extern __float128 cabsq (__complex128) __quadmath_throw;
extern __float128 cargq (__complex128) __quadmath_throw;
extern __float128 cimagq (__complex128) __quadmath_throw;
extern __float128 crealq (__complex128) __quadmath_throw;
extern __complex128 cacosq (__complex128) __quadmath_throw;
extern __complex128 cacoshq (__complex128) __quadmath_throw;
extern __complex128 casinq (__complex128) __quadmath_throw;
extern __complex128 casinhq (__complex128) __quadmath_throw;
extern __complex128 catanq (__complex128) __quadmath_throw;
extern __complex128 catanhq (__complex128) __quadmath_throw;
extern __complex128 ccosq (__complex128) __quadmath_throw;
extern __complex128 ccoshq (__complex128) __quadmath_throw;
extern __complex128 cexpq (__complex128) __quadmath_throw;
extern __complex128 cexpiq (__float128) __quadmath_throw;
extern __complex128 clogq (__complex128) __quadmath_throw;
extern __complex128 clog10q (__complex128) __quadmath_throw;
extern __complex128 conjq (__complex128) __quadmath_throw;
extern __complex128 cpowq (__complex128, __complex128) __quadmath_throw;
extern __complex128 cprojq (__complex128) __quadmath_throw;
extern __complex128 csinq (__complex128) __quadmath_throw;
extern __complex128 csinhq (__complex128) __quadmath_throw;
extern __complex128 csqrtq (__complex128) __quadmath_throw;
extern __complex128 ctanq (__complex128) __quadmath_throw;
extern __complex128 ctanhq (__complex128) __quadmath_throw;
/* Prototypes for string <-> __float128 conversion functions */
extern __float128 strtoflt128 (const char *, char **) __quadmath_throw;
extern int quadmath_snprintf (char *str, size_t size,
const char *format, ...) __quadmath_throw;
/* Macros */
#define FLT128_MAX 1.18973149535723176508575932662800702e4932Q
#define FLT128_MIN 3.36210314311209350626267781732175260e-4932Q
#define FLT128_EPSILON 1.92592994438723585305597794258492732e-34Q
#define FLT128_DENORM_MIN 6.475175119438025110924438958227646552e-4966Q
#define FLT128_MANT_DIG 113
#define FLT128_MIN_EXP (-16381)
#define FLT128_MAX_EXP 16384
#define FLT128_DIG 33
#define FLT128_MIN_10_EXP (-4931)
#define FLT128_MAX_10_EXP 4932
#define HUGE_VALQ __builtin_huge_valq()
/* The following alternative is valid, but brings the warning:
(floating constant exceeds range of ‘__float128’) */
/* #define HUGE_VALQ (__extension__ 0x1.0p32767Q) */
#define M_Eq 2.7182818284590452353602874713526625Q /* e */
#define M_LOG2Eq 1.4426950408889634073599246810018921Q /* log_2 e */
#define M_LOG10Eq 0.4342944819032518276511289189166051Q /* log_10 e */
#define M_LN2q 0.6931471805599453094172321214581766Q /* log_e 2 */
#define M_LN10q 2.3025850929940456840179914546843642Q /* log_e 10 */
#define M_PIq 3.1415926535897932384626433832795029Q /* pi */
#define M_PI_2q 1.5707963267948966192313216916397514Q /* pi/2 */
#define M_PI_4q 0.7853981633974483096156608458198757Q /* pi/4 */
#define M_1_PIq 0.3183098861837906715377675267450287Q /* 1/pi */
#define M_2_PIq 0.6366197723675813430755350534900574Q /* 2/pi */
#define M_2_SQRTPIq 1.1283791670955125738961589031215452Q /* 2/sqrt(pi) */
#define M_SQRT2q 1.4142135623730950488016887242096981Q /* sqrt(2) */
#define M_SQRT1_2q 0.7071067811865475244008443621048490Q /* 1/sqrt(2) */
#define __quadmath_extern_inline \
extern inline __attribute__ ((__gnu_inline__))
__quadmath_extern_inline __float128
__quadmath_nth (cimagq (__complex128 __z))
{
return __imag__ __z;
}
__quadmath_extern_inline __float128
__quadmath_nth (crealq (__complex128 __z))
{
return __real__ __z;
}
__quadmath_extern_inline __complex128
__quadmath_nth (conjq (__complex128 __z))
{
return __extension__ ~__z;
}
#ifdef __cplusplus
}
#endif
#endif
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