glibc/sysdeps/ieee754/ldbl-opt/nldbl-compat.h
Joseph Myers 69a01461ee Add narrowing multiply functions.
This patch adds the narrowing multiply functions from TS 18661-1 to
glibc's libm: fmul, fmull, dmull, f32mulf64, f32mulf32x, f32xmulf64
for all configurations; f32mulf64x, f32mulf128, f64mulf64x,
f64mulf128, f32xmulf64x, f32xmulf128, f64xmulf128 for configurations
with _Float64x and _Float128; __nldbl_dmull for ldbl-opt.

The changes are mostly essentially the same as for the narrowing add
functions, so the description of those generally applies to this patch
as well.  f32xmulf64 for i386 cannot use precision control as used for
add and subtract, because that would result in double rounding for
subnormal results, so that uses round-to-odd with long double
intermediate result instead.  The soft-fp support involves adding a
new FP_TRUNC_COOKED since soft-fp multiplication uses cooked inputs
and outputs.

Tested for x86_64, x86, mips64 (all three ABIs, both hard and soft
float) and powerpc, and with build-many-glibcs.py.

	* math/Makefile (libm-narrow-fns): Add mul.
	(libm-test-funcs-narrow): Likewise.
	* math/Versions (GLIBC_2.28): Add narrowing multiply functions.
	* math/bits/mathcalls-narrow.h (mul): Use __MATHCALL_NARROW.
	* math/gen-auto-libm-tests.c (test_functions): Add mul.
	* math/math-narrow.h (CHECK_NARROW_MUL): New macro.
	(NARROW_MUL_ROUND_TO_ODD): Likewise.
	(NARROW_MUL_TRIVIAL): Likewise.
	* soft-fp/op-common.h (FP_TRUNC_COOKED): Likewise.
	* sysdeps/ieee754/float128/float128_private.h (__fmull): New
	macro.
	(__dmull): Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add fmul and
	dmul.
	(CFLAGS-nldbl-dmul.c): New variable.
	(CFLAGS-nldbl-fmul.c): Likewise.
	* sysdeps/ieee754/ldbl-opt/Versions (GLIBC_2.28): Add
	__nldbl_dmull.
	* sysdeps/ieee754/ldbl-opt/nldbl-compat.h (__nldbl_dmull): New
	prototype.
	* manual/arith.texi (Misc FP Arithmetic): Document fmul, fmull,
	dmull, fMmulfN, fMmulfNx, fMxmulfN and fMxmulfNx.
	* math/auto-libm-test-in: Add tests of mul.
	* math/auto-libm-test-out-narrow-mul: New generated file.
	* math/libm-test-narrow-mul.inc: New file.
	* sysdeps/i386/fpu/s_f32xmulf64.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_f32xmulf64.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_fmul.c: Likewise.
	* sysdeps/ieee754/float128/s_f32mulf128.c: Likewise.
	* sysdeps/ieee754/float128/s_f64mulf128.c: Likewise.
	* sysdeps/ieee754/float128/s_f64xmulf128.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_dmull.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_f64xmulf128.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_fmull.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_dmull.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fmull.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_dmull.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_fmull.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-dmul.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-fmul.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_dmull.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_fmul.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_fmull.c: Likewise.
	* sysdeps/powerpc/fpu/libm-test-ulps: Update.
	* sysdeps/mach/hurd/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
2018-05-16 00:05:28 +00:00

111 lines
3.8 KiB
C

/* Prototypes for compatibility double == long double entry points.
Copyright (C) 2006-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@cygnus.com>, 2006.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef __NLDBL_COMPAT_H
#define __NLDBL_COMPAT_H 1
/* Avoid long double prototypes. */
#define __NO_LONG_DOUBLE_MATH 1
#include <stdarg.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <printf.h>
#include <wchar.h>
#include <math.h>
#include <monetary.h>
#include <sys/syslog.h>
/* Declare the __nldbl_NAME function the wrappers call that's in libc.so. */
#define NLDBL_DECL(name) extern __typeof (name) __nldbl_##name
NLDBL_DECL (_IO_vfscanf);
NLDBL_DECL (vfscanf);
NLDBL_DECL (vfwscanf);
NLDBL_DECL (obstack_vprintf);
NLDBL_DECL (vasprintf);
NLDBL_DECL (dprintf);
NLDBL_DECL (vdprintf);
NLDBL_DECL (fprintf);
NLDBL_DECL (vfprintf);
NLDBL_DECL (vfwprintf);
NLDBL_DECL (vsnprintf);
NLDBL_DECL (vsprintf);
NLDBL_DECL (vsscanf);
NLDBL_DECL (vswprintf);
NLDBL_DECL (vswscanf);
NLDBL_DECL (__asprintf);
NLDBL_DECL (asprintf);
NLDBL_DECL (__printf_fp);
NLDBL_DECL (printf_size);
NLDBL_DECL (syslog);
NLDBL_DECL (vsyslog);
NLDBL_DECL (qecvt);
NLDBL_DECL (qfcvt);
NLDBL_DECL (qgcvt);
NLDBL_DECL (__vstrfmon_l);
NLDBL_DECL (__isoc99_scanf);
NLDBL_DECL (__isoc99_fscanf);
NLDBL_DECL (__isoc99_sscanf);
NLDBL_DECL (__isoc99_vscanf);
NLDBL_DECL (__isoc99_vfscanf);
NLDBL_DECL (__isoc99_vsscanf);
NLDBL_DECL (__isoc99_wscanf);
NLDBL_DECL (__isoc99_fwscanf);
NLDBL_DECL (__isoc99_swscanf);
NLDBL_DECL (__isoc99_vwscanf);
NLDBL_DECL (__isoc99_vfwscanf);
NLDBL_DECL (__isoc99_vswscanf);
/* This one does not exist in the normal interface, only
__nldbl___vstrfmon really exists. */
extern ssize_t __nldbl___vstrfmon (char *, size_t, const char *, va_list)
__THROW;
/* These don't use __typeof because they were not declared by the headers,
since we don't compile with _FORTIFY_SOURCE. */
extern int __nldbl___vfprintf_chk (FILE *__restrict, int,
const char *__restrict, __gnuc_va_list);
extern int __nldbl___vfwprintf_chk (FILE *__restrict, int,
const wchar_t *__restrict, __gnuc_va_list);
extern int __nldbl___vsprintf_chk (char *__restrict, int, size_t,
const char *__restrict, __gnuc_va_list)
__THROW;
extern int __nldbl___vsnprintf_chk (char *__restrict, size_t, int, size_t,
const char *__restrict, __gnuc_va_list)
__THROW;
extern int __nldbl___vswprintf_chk (wchar_t *__restrict, size_t, int, size_t,
const wchar_t *__restrict, __gnuc_va_list)
__THROW;
extern int __nldbl___vasprintf_chk (char **, int, const char *, __gnuc_va_list)
__THROW;
extern int __nldbl___vdprintf_chk (int, int, const char *, __gnuc_va_list);
extern int __nldbl___obstack_vprintf_chk (struct obstack *, int, const char *,
__gnuc_va_list) __THROW;
extern void __nldbl___vsyslog_chk (int, int, const char *, va_list);
/* The original declarations of these were hidden by the including
file. */
extern double __nldbl_daddl (double, double) __THROW;
extern double __nldbl_dmull (double, double) __THROW;
extern double __nldbl_dsubl (double, double) __THROW;
#endif /* __NLDBL_COMPAT_H */