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glibc/sysdeps/ieee754/float128
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Joseph Myers 632a6cbe44 Add narrowing divide functions. 
This patch adds the narrowing divide functions from TS 18661-1 to
glibc's libm: fdiv, fdivl, ddivl, f32divf64, f32divf32x, f32xdivf64
for all configurations; f32divf64x, f32divf128, f64divf64x,
f64divf128, f32xdivf64x, f32xdivf128, f64xdivf128 for configurations
with _Float64x and _Float128; __nldbl_ddivl for ldbl-opt.

The changes are mostly essentially the same as for the other narrowing
functions, so the description of those generally applies to this patch
as well.

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 div.
	(libm-test-funcs-narrow): Likewise.
	* math/Versions (GLIBC_2.28): Add narrowing divide functions.
	* math/bits/mathcalls-narrow.h (div): Use __MATHCALL_NARROW.
	* math/gen-auto-libm-tests.c (test_functions): Add div.
	* math/math-narrow.h (CHECK_NARROW_DIV): New macro.
	(NARROW_DIV_ROUND_TO_ODD): Likewise.
	(NARROW_DIV_TRIVIAL): Likewise.
	* sysdeps/ieee754/float128/float128_private.h (__fdivl): New
	macro.
	(__ddivl): Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add fdiv and
	ddiv.
	(CFLAGS-nldbl-ddiv.c): New variable.
	(CFLAGS-nldbl-fdiv.c): Likewise.
	* sysdeps/ieee754/ldbl-opt/Versions (GLIBC_2.28): Add
	__nldbl_ddivl.
	* sysdeps/ieee754/ldbl-opt/nldbl-compat.h (__nldbl_ddivl): New
	prototype.
	* manual/arith.texi (Misc FP Arithmetic): Document fdiv, fdivl,
	ddivl, fMdivfN, fMdivfNx, fMxdivfN and fMxdivfNx.
	* math/auto-libm-test-in: Add tests of div.
	* math/auto-libm-test-out-narrow-div: New generated file.
	* math/libm-test-narrow-div.inc: New file.
	* sysdeps/i386/fpu/s_f32xdivf64.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_f32xdivf64.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_fdiv.c: Likewise.
	* sysdeps/ieee754/float128/s_f32divf128.c: Likewise.
	* sysdeps/ieee754/float128/s_f64divf128.c: Likewise.
	* sysdeps/ieee754/float128/s_f64xdivf128.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_ddivl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_f64xdivf128.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_fdivl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_ddivl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fdivl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_ddivl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_fdivl.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-ddiv.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-fdiv.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_ddivl.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_fdiv.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_fdivl.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.
2018-05-17 00:40:52 +00:00
..
e_acosf128.c
e_acoshf128.c
e_asinf128.c
e_atan2f128.c
e_atanhf128.c
e_coshf128.c
e_exp10f128.c
e_expf128.c
e_fmodf128.c
e_gammaf128_r.c
e_hypotf128.c
e_ilogbf128.c
e_j0f128.c
e_j1f128.c
e_jnf128.c
e_lgammaf128_r.c
e_log2f128.c
e_log10f128.c
e_logf128.c
e_powf128.c
e_rem_pio2f128.c
e_remainderf128.c
e_scalbf128.c
e_sinhf128.c
float128_private.h Add narrowing divide functions. 2018-05-17 00:40:52 +00:00
float1282mpn.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
gamma_productf128.c
ieee754_float128.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
k_cosf128.c
k_sincosf128.c
k_sinf128.c
k_tanf128.c
lgamma_negf128.c
lgamma_productf128.c
Makeconfig Add _Float64x function aliases. 2017-11-27 14:16:47 +00:00
Makefile Add libio-mtsafe flags to the build of strfromf128 2017-06-23 10:31:49 -03:00
math-nan-payload-float128.h math: Merge strtod_nan_*.h into math-type-macros-*.h 2018-05-16 06:03:08 +02:00
mpn2float128.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_asinhf128.c
s_atanf128.c
s_cbrtf128.c
s_ceilf128.c
s_copysignf128.c
s_cosf128.c
s_erff128.c
s_expm1f128.c
s_f32addf128.c Add narrowing add functions. 2018-02-10 02:08:43 +00:00
s_f32divf128.c Add narrowing divide functions. 2018-05-17 00:40:52 +00:00
s_f32mulf128.c Add narrowing multiply functions. 2018-05-16 00:05:28 +00:00
s_f32subf128.c Add narrowing subtract functions. 2018-03-20 00:34:52 +00:00
s_f64addf128.c Add narrowing add functions. 2018-02-10 02:08:43 +00:00
s_f64divf128.c Add narrowing divide functions. 2018-05-17 00:40:52 +00:00
s_f64mulf128.c Add narrowing multiply functions. 2018-05-16 00:05:28 +00:00
s_f64subf128.c Add narrowing subtract functions. 2018-03-20 00:34:52 +00:00
s_f64xaddf128.c Add narrowing add functions. 2018-02-10 02:08:43 +00:00
s_f64xdivf128.c Add narrowing divide functions. 2018-05-17 00:40:52 +00:00
s_f64xmulf128.c Add narrowing multiply functions. 2018-05-16 00:05:28 +00:00
s_f64xsubf128.c Add narrowing subtract functions. 2018-03-20 00:34:52 +00:00
s_fabsf128.c
s_finitef128.c
s_floorf128.c
s_fmaf128.c
s_fpclassifyf128.c
s_frexpf128.c
s_fromfpf128.c Use libm_alias_float128 more in sysdeps/ieee754/float128. 2017-11-24 23:53:54 +00:00
s_fromfpxf128.c Use libm_alias_float128 more in sysdeps/ieee754/float128. 2017-11-24 23:53:54 +00:00
s_getpayloadf128.c
s_isinff128.c
s_isnanf128.c
s_issignalingf128.c
s_llrintf128.c
s_llroundf128.c
s_log1pf128.c
s_logbf128.c
s_lrintf128.c
s_lroundf128.c
s_modff128.c
s_nearbyintf128.c
s_nextafterf128.c
s_nexttowardf128.c
s_nextupf128.c
s_remquof128.c
s_rintf128.c
s_roundevenf128.c
s_roundf128.c
s_scalblnf128.c
s_scalbnf128.c
s_setpayloadf128.c Use libm_alias_float128 more in sysdeps/ieee754/float128. 2017-11-24 23:53:54 +00:00
s_setpayloadsigf128.c Use libm_alias_float128 more in sysdeps/ieee754/float128. 2017-11-24 23:53:54 +00:00
s_signbitf128.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
s_significandf128.c
s_sincosf128.c
s_sinf128.c
s_tanf128.c
s_tanhf128.c
s_totalorderf128.c
s_totalordermagf128.c
s_truncf128.c
s_ufromfpf128.c Use libm_alias_float128 more in sysdeps/ieee754/float128. 2017-11-24 23:53:54 +00:00
s_ufromfpxf128.c Use libm_alias_float128 more in sysdeps/ieee754/float128. 2017-11-24 23:53:54 +00:00
strfromf128.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
strtof128_l.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
strtof128_nan.c math: Merge strtod_nan_*.h into math-type-macros-*.h 2018-05-16 06:03:08 +02:00
strtof128.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
t_sincosf128.c
Versions Move some float128 symbol version definitions. 2017-10-16 22:04:42 +00:00
wcstof128_l.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
wcstof128_nan.c math: Merge strtod_nan_*.h into math-type-macros-*.h 2018-05-16 06:03:08 +02:00
wcstof128.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
x2y2m1f128.c