glibc/math
Paul E. Murphy e2239af353 Rename __LONG_DOUBLE_USES_FLOAT128 to __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI
Improve the commentary to aid future developers who will stumble
upon this novel, yet not always perfect, mechanism to support
alternative formats for long double.

Likewise, rename __LONG_DOUBLE_USES_FLOAT128 to
__LDOUBLE_REDIRECTS_TO_FLOAT128_ABI now that development work
has settled down.  The command used was

git grep -l __LONG_DOUBLE_USES_FLOAT128 ':!./ChangeLog*' | \
  xargs sed -i 's/__LONG_DOUBLE_USES_FLOAT128/__LDOUBLE_REDIRECTS_TO_FLOAT128_ABI/g'

Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
2020-04-30 08:52:08 -05:00
..
bits ldbl-128ibm-compat: Redirect long double functions to f128/ieee128 functions 2020-02-28 08:20:02 -06:00
finclude Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
machine
atest-exp2.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
atest-exp.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
atest-sincos.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
auto-libm-test-in powerpc: Update ULPs and xfail more ibm128 outputs 2020-04-07 11:41:29 -03:00
auto-libm-test-out-acos Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-acosh math: Remove inline math tests 2020-03-19 11:45:44 -03:00
auto-libm-test-out-asin Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-asinh math: Add inputs that yield larger errors for float type (x86_64) 2020-03-31 21:48:54 -04:00
auto-libm-test-out-atan Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-atan2 Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-atanh math: Remove inline math tests 2020-03-19 11:45:44 -03:00
auto-libm-test-out-cabs Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-cacos Move tests of cacos, cacosh to auto-libm-test-*. 2017-02-17 17:44:23 +00:00
auto-libm-test-out-cacosh Move tests of cacos, cacosh to auto-libm-test-*. 2017-02-17 17:44:23 +00:00
auto-libm-test-out-carg Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-casin Move tests of casin, casinh to auto-libm-test-*. 2017-02-17 18:14:02 +00:00
auto-libm-test-out-casinh Move tests of casin, casinh to auto-libm-test-*. 2017-02-17 18:14:02 +00:00
auto-libm-test-out-catan XFAIL catan and catanh tests on ibm128 2017-03-16 10:36:37 -03:00
auto-libm-test-out-catanh XFAIL catan and catanh tests on ibm128 2017-03-16 10:36:37 -03:00
auto-libm-test-out-cbrt Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-ccos Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-ccosh Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-cexp Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-clog Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-clog10 Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-cos math: Add inputs that yield larger errors for float type (x86_64) 2020-03-31 21:48:54 -04:00
auto-libm-test-out-cosh math: Add inputs that yield larger errors for float type (x86_64) 2020-03-31 21:48:54 -04:00
auto-libm-test-out-cpow Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-csin Move more csin, csinh tests to auto-libm-test-in. 2017-02-09 18:30:41 +00:00
auto-libm-test-out-csinh Move more csin, csinh tests to auto-libm-test-in. 2017-02-09 18:30:41 +00:00
auto-libm-test-out-csqrt Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-ctan Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-ctanh Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-erf Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-erfc math: Add inputs that yield larger errors for float type (x86_64) 2020-03-31 21:48:54 -04:00
auto-libm-test-out-exp math: Add inputs that yield larger errors for float type (x86_64) 2020-03-31 21:48:54 -04:00
auto-libm-test-out-exp2 Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-exp10 math: Add inputs that yield larger errors for float type (x86_64) 2020-03-31 21:48:54 -04:00
auto-libm-test-out-expm1 Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-fma Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-hypot math: Remove inline math tests 2020-03-19 11:45:44 -03:00
auto-libm-test-out-j0 powerpc: Update ULPs and xfail more ibm128 outputs 2020-04-07 11:41:29 -03:00
auto-libm-test-out-j1 powerpc: Update ULPs and xfail more ibm128 outputs 2020-04-07 11:41:29 -03:00
auto-libm-test-out-jn Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-lgamma math: Add inputs that yield larger errors for float type (x86_64) 2020-03-31 21:48:54 -04:00
auto-libm-test-out-log Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-log1p Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-log2 Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-log10 Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-narrow-add Add narrowing add functions. 2018-02-10 02:08:43 +00:00
auto-libm-test-out-narrow-div Add narrowing divide functions. 2018-05-17 00:40:52 +00:00
auto-libm-test-out-narrow-mul Add narrowing multiply functions. 2018-05-16 00:05:28 +00:00
auto-libm-test-out-narrow-sub Add narrowing subtract functions. 2018-03-20 00:34:52 +00:00
auto-libm-test-out-pow Fix powf overflow handling in non-nearest rounding mode [BZ #23961] 2018-12-11 10:01:43 +00:00
auto-libm-test-out-sin math: Add inputs that yield larger errors for float type (x86_64) 2020-03-31 21:48:54 -04:00
auto-libm-test-out-sincos Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-sinh math: Remove inline math tests 2020-03-19 11:45:44 -03:00
auto-libm-test-out-sqrt Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-tan Improve float range reduction accuracy near pi/2 (bug 21094). 2017-03-15 22:00:54 +00:00
auto-libm-test-out-tanh Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-tgamma math: Add inputs that yield larger errors for float type (x86_64) 2020-03-31 21:48:54 -04:00
auto-libm-test-out-y0 math: Add inputs that yield larger errors for float type (x86_64) 2020-03-31 21:48:54 -04:00
auto-libm-test-out-y1 Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
auto-libm-test-out-yn Split auto-libm-test-out by function. 2017-02-06 18:41:20 +00:00
basic-test.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
bug-nextafter.c Remove NO_LONG_DOUBLE conditionals in libm tests (bug 21607). 2017-06-28 16:01:20 +00:00
bug-nexttoward.c Remove NO_LONG_DOUBLE conditionals in libm tests (bug 21607). 2017-06-28 16:01:20 +00:00
bug-tgmath1.c Update. 2004-05-07 02:14:18 +00:00
cabs_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
carg_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
cimag_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
complex.h Rename __LONG_DOUBLE_USES_FLOAT128 to __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI 2020-04-30 08:52:08 -05:00
conj_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
creal_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
divtc3.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
e_exp2_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
e_exp10.c Add libm_alias_finite for _finite symbols 2020-01-03 10:02:04 -03:00
e_exp10f.c Add libm_alias_finite for _finite symbols 2020-01-03 10:02:04 -03:00
e_exp10l.c Add libm_alias_finite for _finite symbols 2020-01-03 10:02:04 -03:00
e_scalb_template.c Add a generic scalb implementation 2020-02-14 08:24:56 -06:00
fclrexcpt.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
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feholdexcpt.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
fenv.h math: Remove fenvinline.h 2020-03-30 10:52:25 -03:00
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gen-auto-libm-tests.c math: Remove inline math tests 2020-03-19 11:45:44 -03:00
gen-fromfp-tests-inputs Add fromfp functions. 2016-12-31 00:40:59 +00:00
gen-fromfp-tests.py Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
gen-libm-test.py math: Remove inline math tests 2020-03-19 11:45:44 -03:00
gen-tgmath-tests.py Convert Python scripts to Python 3 2020-03-03 15:52:09 -08:00
k_casinh_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
k_sincosl.c Moved to csu/errno-loc.c. 2005-12-14 15:06:39 +00:00
lgamma-compat.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
libm-test-acos.inc Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
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libm-test-driver.c math: Remove inline math tests 2020-03-19 11:45:44 -03:00
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libm-test-support.c math: Remove inline math tests 2020-03-19 11:45:44 -03:00
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Makefile Remove __NO_MATH_INLINES 2020-04-17 11:40:44 -03:00
math-narrow.h ldbl-128ibm-compat: Provide ieee128 symbols to narrow functions 2020-02-20 17:12:14 -06:00
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math.h Rename __LONG_DOUBLE_USES_FLOAT128 to __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI 2020-04-30 08:52:08 -05:00
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README.libm-test Remove __NO_MATH_INLINES 2020-04-17 11:40:44 -03:00
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s_iscanonicall.c Add iscanonical. 2016-09-30 00:27:50 +00:00
s_iseqsig_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
s_ldexp_template.c Remove unnecessary math_private.h includes. 2018-09-28 21:53:33 +00:00
s_nan_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
s_nextafter.c Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
s_nextdown_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
s_nexttowardf.c Do not include math-barriers.h in math_private.h. 2018-05-11 15:11:38 +00:00
s_nexttowardl.c Moved to csu/errno-loc.c. 2005-12-14 15:06:39 +00:00
s_significand_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
setfpucw.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
t_sincosl.c Moved to csu/errno-loc.c. 2005-12-14 15:06:39 +00:00
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test-arg-ldouble.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
test-double-vlen2.h math: Remove inline math tests 2020-03-19 11:45:44 -03:00
test-double-vlen4.h math: Remove inline math tests 2020-03-19 11:45:44 -03:00
test-double-vlen8.h math: Remove inline math tests 2020-03-19 11:45:44 -03:00
test-double.h math: Remove inline math tests 2020-03-19 11:45:44 -03:00
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test-fenv-clear-main.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
test-fenv-clear.c Fix i386/x86_64 fesetenv SSE exception clearing (bug 19181). 2015-10-28 18:50:20 +00:00
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test-float32.h math: Remove inline math tests 2020-03-19 11:45:44 -03:00
test-float32x.h math: Remove inline math tests 2020-03-19 11:45:44 -03:00
test-float64.h math: Remove inline math tests 2020-03-19 11:45:44 -03:00
test-float64x.h math: Remove inline math tests 2020-03-19 11:45:44 -03:00
test-float128.h math: Remove inline math tests 2020-03-19 11:45:44 -03:00
test-float-vlen4.h math: Remove inline math tests 2020-03-19 11:45:44 -03:00
test-float-vlen8.h math: Remove inline math tests 2020-03-19 11:45:44 -03:00
test-float-vlen16.h math: Remove inline math tests 2020-03-19 11:45:44 -03:00
test-float.h math: Remove inline math tests 2020-03-19 11:45:44 -03:00
test-flt-eval-method.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
test-fp-ilogb-constants.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
test-fp-llogb-constants.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
test-fpucw-ieee-static.c Fix static-binary lazy FPU context allocation 2013-09-09 22:36:57 +01:00
test-fpucw-ieee.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
test-fpucw-static.c Fix math/test-fpucw-*.c for sysdeps test-fpucw.c overrides. 2014-01-16 05:30:52 +00:00
test-fpucw.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
test-ibm128.h ldbl-128ibm-compat: Add tests for IBM long double functions 2020-03-06 09:17:32 -06:00
test-iseqsig-excess-precision.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
test-iszero-excess-precision.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
test-ldouble.h Rename __LONG_DOUBLE_USES_FLOAT128 to __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI 2020-04-30 08:52:08 -05:00
test-math-cxx11.cc Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
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test-misc.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
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test-powl.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
test-signgam-main.c Remove __LIBC_INTERNAL_MATH_INLINES 2020-03-19 11:45:44 -03:00
test-signgam-uchar-init-static.c Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
test-signgam-uchar-init.c Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
test-signgam-uchar-static.c Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
test-signgam-uchar.c Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
test-signgam-uint-init-static.c Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
test-signgam-uint-init.c Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
test-signgam-uint-static.c Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
test-signgam-uint.c Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
test-signgam-ullong-init-static.c Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
test-signgam-ullong-init.c Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
test-signgam-ullong-static.c Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
test-signgam-ullong.c Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
test-snan.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
test-tgmath2.c Remove __NO_MATH_INLINES 2020-04-17 11:40:44 -03:00
test-tgmath-int.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
test-tgmath-ret.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
test-tgmath.c Remove __NO_MATH_INLINES 2020-04-17 11:40:44 -03:00
tgmath.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-CMPLX2.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tst-CMPLX.c Don't disable CMPLXL macro for __NO_LONG_DOUBLE_MATH (bug 15488). 2013-05-18 12:12:38 +00:00
tst-definitions.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
Versions Make totalorder and totalordermag functions take pointer arguments. 2019-08-15 15:18:34 +00:00
w_acos_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_acos_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
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w_acosh_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
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w_asin_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
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w_asinf_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_asinl_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_atan2_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_atan2_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_atan2f_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_atan2l_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_atanh_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_atanh_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_atanhf_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_atanhl_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_cosh_compat.c Fix spellings of contributor names in comments and doc 2019-08-23 13:11:05 -07:00
w_cosh_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_coshf_compat.c Use libm_alias_float in math/. 2017-09-15 17:12:02 +00:00
w_coshl_compat.c Fix spellings of contributor names in comments and doc 2019-08-23 13:11:05 -07:00
w_exp2_compat.c Remove the error handling wrapper from exp and exp2 2018-11-21 09:55:02 +00:00
w_exp2_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_exp2.c Remove the error handling wrapper from exp and exp2 2018-11-21 09:55:02 +00:00
w_exp2f_compat.c New expf and exp2f version without SVID compat wrapper 2017-09-25 10:45:08 +01:00
w_exp2f.c Add libm_alias_*_other_r macros. 2017-10-10 21:29:11 +00:00
w_exp2l_compat.c Use libm_alias_ldouble in math/. 2017-09-18 17:51:33 +00:00
w_exp10_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_exp10_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_exp10f_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_exp10l_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_exp_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_exp_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_exp.c Remove the error handling wrapper from exp and exp2 2018-11-21 09:55:02 +00:00
w_expf_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_expf.c Add libm_alias_*_other_r macros. 2017-10-10 21:29:11 +00:00
w_expl_compat.c Replace hidden_def with libm_hidden_def in math 2018-04-30 11:45:54 -03:00
w_fmod_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_fmod_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_fmodf_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_fmodl_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_hypot_compat.c Use libm_alias_double in math/. 2017-09-15 23:10:02 +00:00
w_hypot_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_hypotf_compat.c Use libm_alias_float in math/. 2017-09-15 17:12:02 +00:00
w_hypotl_compat.c Use libm_alias_ldouble in math/. 2017-09-18 17:51:33 +00:00
w_ilogb_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_j0_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_j0_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_j0f_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_j0l_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_j1_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_j1_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_j1f_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_j1l_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_jn_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_jn_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_jnf_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_jnl_compat.c Use libm_alias_ldouble in math/. 2017-09-18 17:51:33 +00:00
w_lgamma_compat2.c Move w_lgamma to libm-compat-calls-auto 2017-02-08 17:40:11 -02:00
w_lgamma_compat.c Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
w_lgamma_compatf.c Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
w_lgamma_compatl.c Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
w_lgamma_main.c Use floor functions not __floor functions in glibc libm. 2018-09-14 13:09:01 +00:00
w_lgamma_r_compat.c Use floor functions not __floor functions in glibc libm. 2018-09-14 13:09:01 +00:00
w_lgamma_r_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_lgamma_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_lgamma.c fix gamma symbol for static linking and new targets 2017-10-02 17:33:13 +01:00
w_lgammaf_compat2.c Move w_lgamma to libm-compat-calls-auto 2017-02-08 17:40:11 -02:00
w_lgammaf_main.c Use floor functions not __floor functions in glibc libm. 2018-09-14 13:09:01 +00:00
w_lgammaf_r_compat.c Use floor functions not __floor functions in glibc libm. 2018-09-14 13:09:01 +00:00
w_lgammaf.c fix gamma symbol for static linking and new targets 2017-10-02 17:33:13 +01:00
w_lgammal_compat2.c Move w_lgamma to libm-compat-calls-auto 2017-02-08 17:40:11 -02:00
w_lgammal_main.c Use floor functions not __floor functions in glibc libm. 2018-09-14 13:09:01 +00:00
w_lgammal_r_compat.c Use floor functions not __floor functions in glibc libm. 2018-09-14 13:09:01 +00:00
w_lgammal.c fix gamma symbol for static linking and new targets 2017-10-02 17:33:13 +01:00
w_llogb_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
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w_log2.c Remove the error handling wrapper from log2 2018-11-21 09:57:21 +00:00
w_log2f_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_log2f.c Add libm_alias_*_other_r macros. 2017-10-10 21:29:11 +00:00
w_log2l_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
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w_log.c Remove the error handling wrapper from log 2018-11-21 09:56:27 +00:00
w_logf_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_logf.c Add libm_alias_*_other_r macros. 2017-10-10 21:29:11 +00:00
w_logl_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
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w_pow.c Remove the error handling wrapper from pow 2018-11-21 09:58:36 +00:00
w_powf_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_powf.c Add libm_alias_*_other_r macros. 2017-10-10 21:29:11 +00:00
w_powl_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_remainder_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
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w_remainder.c fix drem symbol for static linking and new targets 2017-10-03 14:31:59 +01:00
w_remainderf_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_remainderf.c fix drem symbol for static linking and new targets 2017-10-03 14:31:59 +01:00
w_remainderl_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_remainderl.c fix drem symbol for static linking and new targets 2017-10-03 14:31:59 +01:00
w_scalb_compat.c Add a generic scalb implementation 2020-02-14 08:24:56 -06:00
w_scalb_template.c Add a generic scalb implementation 2020-02-14 08:24:56 -06:00
w_scalbf_compat.c Add a generic scalb implementation 2020-02-14 08:24:56 -06:00
w_scalbl_compat.c Add a generic scalb implementation 2020-02-14 08:24:56 -06:00
w_scalbln_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_sinh_compat.c Use libm_alias_double in math/. 2017-09-15 23:10:02 +00:00
w_sinh_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_sinhf_compat.c Use libm_alias_float in math/. 2017-09-15 17:12:02 +00:00
w_sinhl_compat.c Use libm_alias_ldouble in math/. 2017-09-18 17:51:33 +00:00
w_sqrt_compat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
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w_tgamma_compat.c Use floor functions not __floor functions in glibc libm. 2018-09-14 13:09:01 +00:00
w_tgamma_template.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
w_tgammaf_compat.c Use floor functions not __floor functions in glibc libm. 2018-09-14 13:09:01 +00:00
w_tgammal_compat.c Use floor functions not __floor functions in glibc libm. 2018-09-14 13:09:01 +00:00

README for libm-test math test suite
====================================

The libm-test math test suite tests a number of function points of
math functions in the GNU C library.  The following sections contain a
brief overview.  Please note that the test drivers and the Python
script "gen-libm-test.py" have some options.  A full list of options
is available with --help (for the test drivers) and -h for
"gen-libm-test.py".


What is tested?
===============
The tests just evaluate the functions at specified points and compare
the results with precomputed values and the requirements of the ISO
C99 standard.

Besides testing the special values mandated by IEEE 754 (infinities,
NaNs and minus zero), some more or less random values are tested.

Files that are part of libm-test
================================

The main files are "libm-test-<func>.inc".  They are independent of
the target platform and the specific real floating type and format and
contain placeholder test "templates" for math functions defined in
libm.  These files, along with generated files named
"auto-libm-test-out-<func>", are preprocessed by the Python script
"gen-libm-test.py" to expand the templates and produce a set of test
cases for each math function that are specific to the target platform
but still independent of the real floating type.  The results of the
processing are "libm-test-<func>.c" and a file "libm-test-ulps.h" with
platform specific deltas by which the actual math function results may
deviate from the expected results and still be considered correct.

The test drivers "test-double-<func>.c", "test-float-<func>.c", and
"test-ldouble-<func>.c", generated by the Makefile, test the normal
double, float and long double implementation of libm.  Each driver
selects the desired real floating type to exercise the math functions
to test with (float, double, or long double) by defining a small set
of macros just before including the generic "libm-test.c" file. Each
driver is compiled into a single executable test program with the
corresponding name.

As mentioned above, the "gen-libm-test.py" script looks for a file
named "libm-test-ulps" in the platform specific sysdep directory (or
its fpu or nofpu subdirectory) and for each variant (real floating
type and rounding mode) of every tested function reads from it the
maximum difference expressed as Units of Least Precision (ULP) the
actual result of the function may deviate from the expected result
before it's considered incorrect.

The "auto-libm-test-out-<func>" files contain sets of test cases to
exercise, the conditions under which to exercise each, and the
expected results.  The files are generated by the
"gen-auto-libm-tests" program from the "auto-libm-test-in" file.  See
the comments in gen-auto-libm-tests.c for details about the content
and format of the -in and -out files.

How can I generate "libm-test-ulps"?
====================================

To automatically generate a new "libm-test-ulps" run "make regen-ulps".
This generates the file "math/NewUlps" in the build directory.  The file
contains the sorted results of all the tests.  You can use the "NewUlps"
file as the machine's updated "libm-test-ulps" file.  Copy "NewUlps" to
"libm-test-ulps" in the appropriate machine sysdep directory.  Verify
the changes, post your patch, and check it in after review.

To manually generate a new "libm-test-ulps" file, first remove "ULPs"
file in the current directory, then you can execute for example:
    ./testrun.sh math/test-double -u --ignore-max-ulp=yes
This generates a file "ULPs" with all double ULPs in it, ignoring any
previously calculated ULPs, and running with the newly built dynamic
loader and math library (assumes you didn't install your build).  Now
generate the ULPs for all other formats, the tests will be appending the
data to the "ULPs" file.  As final step run "gen-libm-test.py" with the
file as input and ask to generate a pretty printed output in the file
"NewUlps":
  gen-libm-test.py -u ULPs -n NewUlps
Copy "NewUlps" to "libm-test-ulps" in the appropriate machine sysdep
directory.

Note that the test drivers have an option "-u" to output an unsorted
list of all epsilons that the functions have.  The output can be read
in directly but it's better to pretty print it first.
"gen-libm-test.py" has an option to generate a pretty-printed and
sorted new ULPs file from the output of the test drivers.

Contents of libm-test-ulps
==========================

Since libm-test-ulps can be generated automatically, just a few notes.
The file contains lines for maximal errors of single functions, like:

Function "yn":
double: 6

The keywords are float, double, and ldouble.

Adding tests to libm-test-<func>.inc
====================================

The tests are evaluated by a set of special test macros.  The macros
start with "TEST_" followed by a specification the input values, an
underscore and a specification of the output values.  As an example,
the test macro for a function with input of type FLOAT (FLOAT is
either float, double, long double) and output of type FLOAT is
"TEST_f_f".  The macro's parameter are the name of the function, the
input parameter, output parameter and optionally one exception
parameter.

The accepted parameter types are:
- "f" for FLOAT
- "j" for long double.
- "a" for ARG_FLOAT, the argument type for narrowing functions.
- "b" for boolean - just tests if the output parameter evaluates to 0
  or 1 (only for output).
- "c" for complex.  This parameter needs two values, first the real,
  then the imaginary part.
- "i" for int.
- "l" for long int.
- "L" for long long int.
- "u" for unsigned int.
- "M" for intmax_t.
- "U" for uintmax_t.
- "p" for an argument (described in the previous character) passed
  through a pointer rather than directly.
- "F" for the address of a FLOAT (only as input parameter)
- "I" for the address of an int (only as input parameter)
- "1" for an additional output (either output through a pointer passed
  as an argument, or to a global variable such as signgam).

How to read the test output
===========================

Running each test on its own at the default level of verbosity will
print on stdout a line describing the implementation of math functions
exercised by the test (float, double, or long double).  This is then
followed by the details of test failures (if any).  The output concludes
by a summary listing the number of test cases exercised and the number
of test failures uncovered.

For each test failure (and for each test case at higher levels of
verbosity), the output contains the name of the function under test
and its arguments or conditions that triggered the failure.  Note
that the name of the function in the output need not correspond
exactly to the name of the math function actually invoked. For example,
the output will refer to the "acos" function even if the actual function
under test is acosf (for the float version) or acosl (for the long
double version).  Also note that the function arguments may be shown
in either the decimal or the  hexadecimal floating point format which
may or may not correspond to the format used in the auto-libm-test-in
file. Besides the name of the function, for each test failure the
output contains the actual and expected results and the difference
between the two, printed in both the decimal and hexadecimal
floating point format, and the ULP and maximum ULP for the test
case.