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69a01461ee
glibc/sysdeps/ieee754/dbl-64
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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
..
wordsize-64 Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
asincos.tbl Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
atnat2.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
atnat.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
branred.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
branred.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
dbl2mpn.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
dla.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
doasin.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
doasin.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
dosincos.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
dosincos.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
e_acos.c Update. 2001-03-12 00:04:52 +00:00
e_acosh.c Rename all __ieee754_sqrt(f/l) calls to sqrt(f/l) 2018-03-15 19:21:36 +00:00
e_asin.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
e_atan2.c Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
e_atanh.c Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
e_cosh.c Move math_narrow_eval to separate math-narrow-eval.h. 2018-05-09 00:15:10 +00:00
e_exp2.c Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
e_exp10.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
e_exp.c Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
e_fmod.c Consistently use uintN_t not u_intN_t in libm. 2017-08-03 19:55:04 +00:00
e_gamma_r.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
e_hypot.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
e_ilogb.c Format floating routines. 2013-10-17 16:03:24 +02:00
e_j0.c Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
e_j1.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
e_jn.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
e_lgamma_r.c Move math_narrow_eval to separate math-narrow-eval.h. 2018-05-09 00:15:10 +00:00
e_log2.c Use fabs(f/l) rather than __fabs 2017-09-29 18:54:24 +01:00
e_log10.c Use fabs(f/l) rather than __fabs 2017-09-29 18:54:24 +01:00
e_log.c Remove slow paths from log 2018-02-07 12:24:43 +00:00
e_pow.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
e_rem_pio2.c Consistently use uintN_t not u_intN_t in libm. 2017-08-03 19:55:04 +00:00
e_remainder.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
e_sinh.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
e_sqrt.c Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
eexp.tbl Improves __ieee754_exp(x) performance by 18-37% when |x| < 1.0397 2018-04-15 18:46:37 -04:00
gamma_product.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
gamma_productf.c Move math_narrow_eval to separate math-narrow-eval.h. 2018-05-09 00:15:10 +00:00
k_cos.c Update. 2001-03-12 00:04:52 +00:00
k_rem_pio2.c Move math_narrow_eval to separate math-narrow-eval.h. 2018-05-09 00:15:10 +00:00
k_sin.c Update. 2001-03-12 00:04:52 +00:00
k_tan.c Replace sysdeps/ieee754/dbl-64/k_tan.c with empty file 2012-02-26 16:10:46 +01:00
lgamma_neg.c Move math_narrow_eval to separate math-narrow-eval.h. 2018-05-09 00:15:10 +00:00
lgamma_product.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
Makefile Fix CFLAGS override in sysdeps/ieee754/dbl-64 2017-08-24 15:56:11 +01:00
MathLib.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
mpa-arch.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
mpa.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
mpa.h Remove mplog and mpexp 2018-02-15 12:41:05 +00:00
mpatan2.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
mpatan.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
mpatan.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
mpn2dbl.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
mpsqrt.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
mpsqrt.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
mptan.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
mydefs.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
powtwo.tbl Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
root.tbl Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_asinh.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
s_atan.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
s_cbrt.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_ceil.c Use libm_alias_double for more dbl-64 functions. 2017-10-03 17:47:35 +00:00
s_copysign.c Use libm_alias_double for some dbl-64 functions. 2017-09-29 23:54:33 +00:00
s_cos.c Update. 2001-03-12 00:04:52 +00:00
s_erf.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
s_expm1.c Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
s_f32xaddf64.c Add narrowing add functions. 2018-02-10 02:08:43 +00:00
s_f32xmulf64.c Add narrowing multiply functions. 2018-05-16 00:05:28 +00:00
s_f32xsubf64.c Add narrowing subtract functions. 2018-03-20 00:34:52 +00:00
s_fabs.c Use libm_alias_double for some dbl-64 functions. 2017-09-29 23:54:33 +00:00
s_fadd.c Add narrowing add functions. 2018-02-10 02:08:43 +00:00
s_finite.c Move LDBL_CLASSIFY_COMPAT to its own header. 2018-02-01 21:01:00 +00:00
s_floor.c Use libm_alias_double for more dbl-64 functions. 2017-10-03 17:47:35 +00:00
s_fma.c Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
s_fmaf.c Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
s_fmul.c Add narrowing multiply functions. 2018-05-16 00:05:28 +00:00
s_fpclassify.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_frexp.c Use libm_alias_double for dbl-64 frexp. 2017-10-03 20:56:46 +00:00
s_fromfp_main.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_fromfp.c Use libm_alias_double for some dbl-64 functions. 2017-09-29 23:54:33 +00:00
s_fromfpx.c Use libm_alias_double for some dbl-64 functions. 2017-09-29 23:54:33 +00:00
s_fsub.c Add narrowing subtract functions. 2018-03-20 00:34:52 +00:00
s_getpayload.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_isinf.c Move LDBL_CLASSIFY_COMPAT to its own header. 2018-02-01 21:01:00 +00:00
s_isnan.c Move LDBL_CLASSIFY_COMPAT to its own header. 2018-02-01 21:01:00 +00:00
s_issignaling.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_llrint.c Move math_narrow_eval to separate math-narrow-eval.h. 2018-05-09 00:15:10 +00:00
s_llround.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_log1p.c Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
s_logb.c Use libm_alias_double for dbl-64 logb. 2017-10-03 23:44:41 +00:00
s_lrint.c Move math_narrow_eval to separate math-narrow-eval.h. 2018-05-09 00:15:10 +00:00
s_lround.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_modf.c Use libm_alias_double for dbl-64 modf. 2017-10-03 23:46:23 +00:00
s_nearbyint.c Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
s_nexttoward.c Update. 1999-07-14 00:54:57 +00:00
s_nextup.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
s_remquo.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_rint.c Use libm_alias_double for more dbl-64 functions. 2017-10-03 17:47:35 +00:00
s_round.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_roundeven.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_scalbln.c [BZ #6803] Set errno for scalbln, scalbn 2014-06-20 07:48:20 +05:30
s_scalbn.c Make scalbn set errno (bug 6803). 2015-09-16 21:11:00 +00:00
s_setpayload_main.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_setpayload.c Use libm_alias_double for some dbl-64 functions. 2017-09-29 23:54:33 +00:00
s_setpayloadsig.c Use libm_alias_double for some dbl-64 functions. 2017-09-29 23:54:33 +00:00
s_signbit.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_sin.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
s_sincos.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
s_tan.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
s_tanh.c Move math_check_force_underflow macros to separate math-underflow.h. 2018-05-10 00:53:04 +00:00
s_totalorder.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_totalordermag.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_trunc.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_ufromfp.c Use libm_alias_double for some dbl-64 functions. 2017-09-29 23:54:33 +00:00
s_ufromfpx.c Use libm_alias_double for some dbl-64 functions. 2017-09-29 23:54:33 +00:00
sincos32.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
sincos32.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
sincostab.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
t_exp2.h Update. 1999-07-14 00:54:57 +00:00
t_exp.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
uasncs.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
uatan.tbl Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
uexp.h Remove slow paths from exp 2018-02-12 11:33:33 +00:00
uexp.tbl Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ulog.h Remove slow paths from log 2018-02-07 12:24:43 +00:00
ulog.tbl Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
upow.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
upow.tbl Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
urem.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
usncs.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
utan.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
utan.tbl Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
x2y2m1.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
x2y2m1f.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00