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392b3f0971
The CORE-MATH implementation is correctly rounded (for any rounding mode).
This can be checked by exhaustive tests in a few minutes since there are
less than 2^32 values to check against for example GNU MPFR.
This patch also adds some bench values for tgammaf.
Tested on x86_64 and x86 (cfarm26).
With the initial GNU libc code it gave on an Intel(R) Core(TM) i7-8700:
"tgammaf": {
"": {
"duration": 3.50188e+09,
"iterations": 2e+07,
"max": 602.891,
"min": 65.1415,
"mean": 175.094
}
}
With the new code:
"tgammaf": {
"": {
"duration": 3.30825e+09,
"iterations": 5e+07,
"max": 211.592,
"min": 32.0325,
"mean": 66.1649
}
}
With the initial GNU libc code it gave on cfarm26 (i686):
"tgammaf": {
"": {
"duration": 3.70505e+09,
"iterations": 6e+06,
"max": 2420.23,
"min": 243.154,
"mean": 617.509
}
}
With the new code:
"tgammaf": {
"": {
"duration": 3.24497e+09,
"iterations": 1.8e+07,
"max": 1238.15,
"min": 101.155,
"mean": 180.276
}
}
Signed-off-by: Alexei Sibidanov <sibid@uvic.ca>
Signed-off-by: Paul Zimmermann <Paul.Zimmermann@inria.fr>
Changes in v2:
- include <math.h> (fix the linknamespace failures)
- restored original benchtests/strcoll-inputs/filelist#en_US.UTF-8 file
- restored original wrapper code (math/w_tgammaf_compat.c),
except for the dealing with the sign
- removed the tgammaf/float entries in all libm-test-ulps files
- address other comments from Joseph Myers
(https://sourceware.org/pipermail/libc-alpha/2024-July/158736.html)
Changes in v3:
- pass NULL argument for signgam from w_tgammaf_compat.c
- use of math_narrow_eval
- added more comments
Changes in v4:
- initialize local_signgam to 0 in math/w_tgamma_template.c
- replace sysdeps/ieee754/dbl-64/gamma_productf.c by dummy file
Changes in v5:
- do not mention local_signgam any more in math/w_tgammaf_compat.c
- initialize local_signgam to 1 instead of 0 in w_tgamma_template.c
and added comment
Changes in v6:
- pass NULL as 2nd argument of __ieee754_gammaf_r in
w_tgammaf_compat.c, and check for NULL in e_gammaf_r.c
Changes in v7:
- added Signed-off-by line for Alexei Sibidanov (author of the code)
Changes in v8:
- added Signed-off-by line for Paul Zimmermann (submitted of the patch)
Changes in v9:
- address comments from review by Adhemerval Zanella
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
274 lines
3.1 KiB
Plaintext
274 lines
3.1 KiB
Plaintext
# Begin of automatic generation
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# Maximal error of functions:
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Function: "acos":
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float: 1
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Function: "acosh":
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double: 2
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float: 2
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Function: "asin":
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float: 1
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Function: "asinh":
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double: 1
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float: 1
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Function: "atan":
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float: 1
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Function: "atan2":
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float: 1
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Function: "atanh":
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double: 2
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float: 2
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Function: "cabs":
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double: 1
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Function: Real part of "cacos":
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double: 1
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float: 2
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Function: Imaginary part of "cacos":
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double: 2
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float: 2
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Function: Real part of "cacosh":
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double: 2
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float: 2
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Function: Imaginary part of "cacosh":
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double: 1
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float: 2
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Function: "carg":
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float: 1
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Function: Real part of "casin":
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double: 1
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float: 1
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Function: Imaginary part of "casin":
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double: 2
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float: 2
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Function: Real part of "casinh":
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double: 2
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float: 2
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Function: Imaginary part of "casinh":
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double: 1
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float: 1
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Function: Real part of "catan":
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double: 1
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float: 1
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Function: Imaginary part of "catan":
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double: 1
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float: 1
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Function: Real part of "catanh":
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double: 1
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float: 1
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Function: Imaginary part of "catanh":
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double: 1
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float: 1
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Function: "cbrt":
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double: 3
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float: 1
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Function: Real part of "ccos":
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double: 1
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float: 1
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Function: Imaginary part of "ccos":
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double: 1
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float: 1
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Function: Real part of "ccosh":
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double: 1
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float: 1
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Function: Imaginary part of "ccosh":
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double: 1
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float: 1
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Function: Real part of "cexp":
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double: 2
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float: 1
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Function: Imaginary part of "cexp":
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double: 1
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float: 2
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Function: Real part of "clog":
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double: 3
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float: 3
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Function: Imaginary part of "clog":
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float: 1
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Function: Real part of "clog10":
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double: 3
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float: 4
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Function: Imaginary part of "clog10":
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double: 2
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float: 2
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Function: "cos":
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float: 1
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Function: "cosh":
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double: 1
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float: 1
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Function: Real part of "cpow":
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double: 2
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float: 4
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Function: Imaginary part of "cpow":
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float: 2
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Function: Real part of "csin":
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double: 1
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float: 1
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Function: Real part of "csinh":
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float: 1
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Function: Imaginary part of "csinh":
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double: 1
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float: 1
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Function: Real part of "csqrt":
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double: 2
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float: 2
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Function: Imaginary part of "csqrt":
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double: 2
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float: 2
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Function: Real part of "ctan":
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double: 1
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float: 1
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Function: Imaginary part of "ctan":
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double: 2
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float: 1
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Function: Real part of "ctanh":
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double: 2
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float: 1
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Function: Imaginary part of "ctanh":
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double: 2
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float: 2
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Function: "erf":
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double: 1
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float: 1
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Function: "erfc":
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double: 3
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float: 2
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Function: "exp":
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float: 1
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Function: "exp10":
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double: 2
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Function: "exp2":
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double: 1
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float: 1
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Function: "expm1":
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double: 1
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float: 1
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Function: "gamma":
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double: 4
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float: 4
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Function: "hypot":
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double: 1
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Function: "j0":
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double: 2
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float: 2
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Function: "j1":
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double: 1
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float: 2
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Function: "jn":
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double: 4
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float: 4
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Function: "lgamma":
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double: 4
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float: 4
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Function: "log":
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float: 1
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Function: "log10":
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double: 2
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float: 2
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Function: "log1p":
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double: 1
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float: 1
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Function: "log2":
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double: 2
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float: 1
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Function: "logp1":
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double: 1
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float: 1
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Function: "pow":
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float: 1
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Function: "sin":
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float: 1
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Function: "sincos":
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float: 1
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Function: "sinh":
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double: 2
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float: 2
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Function: "tan":
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float: 1
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Function: "tanh":
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double: 2
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float: 2
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Function: "tgamma":
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double: 5
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Function: "y0":
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double: 2
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float: 1
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Function: "y1":
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double: 3
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float: 2
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Function: "yn":
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double: 3
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float: 2
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# end of automatic generation
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