glibc/sysdeps/sh/libm-test-ulps
Paul Zimmermann 392b3f0971 replace tgammaf by the CORE-MATH implementation
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>
2024-10-11 11:12:32 +02:00

564 lines
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# Begin of automatic generation
# Maximal error of functions:
Function: "acos":
float: 1
Function: "acos_towardzero":
double: 1
float: 1
Function: "acosh":
double: 2
float: 2
Function: "acosh_towardzero":
double: 2
float: 2
Function: "asin":
float: 1
Function: "asin_towardzero":
double: 1
float: 1
Function: "asinh":
double: 2
float: 2
Function: "asinh_towardzero":
double: 2
float: 2
Function: "atan":
float: 1
Function: "atan2":
float: 1
Function: "atan2_towardzero":
double: 1
float: 2
Function: "atan_towardzero":
double: 1
float: 1
Function: "atanh":
double: 2
float: 2
Function: "atanh_towardzero":
double: 2
float: 2
Function: "cabs":
double: 1
Function: "cabs_towardzero":
double: 1
Function: Real part of "cacos":
double: 1
float: 2
Function: Imaginary part of "cacos":
double: 2
float: 2
Function: Real part of "cacos_towardzero":
double: 3
float: 2
Function: Imaginary part of "cacos_towardzero":
double: 4
float: 2
Function: Real part of "cacosh":
double: 2
float: 2
Function: Imaginary part of "cacosh":
double: 1
float: 2
Function: Real part of "cacosh_towardzero":
double: 4
float: 2
Function: Imaginary part of "cacosh_towardzero":
double: 3
float: 2
Function: "carg":
float: 1
Function: "carg_towardzero":
double: 1
float: 2
Function: Real part of "casin":
double: 1
float: 1
Function: Imaginary part of "casin":
double: 2
float: 2
Function: Real part of "casin_towardzero":
double: 3
float: 1
Function: Imaginary part of "casin_towardzero":
double: 4
float: 2
Function: Real part of "casinh":
double: 2
float: 2
Function: Imaginary part of "casinh":
double: 1
float: 1
Function: Real part of "casinh_towardzero":
double: 4
float: 2
Function: Imaginary part of "casinh_towardzero":
double: 3
float: 1
Function: Real part of "catan":
double: 1
float: 1
Function: Imaginary part of "catan":
double: 1
float: 1
Function: Real part of "catan_towardzero":
double: 1
float: 2
Function: Imaginary part of "catan_towardzero":
double: 2
float: 2
Function: Real part of "catanh":
double: 1
float: 1
Function: Imaginary part of "catanh":
double: 1
float: 1
Function: Real part of "catanh_towardzero":
double: 2
float: 2
Function: Imaginary part of "catanh_towardzero":
double: 1
float: 2
Function: "cbrt":
double: 4
float: 1
Function: "cbrt_towardzero":
double: 3
float: 1
Function: Real part of "ccos":
double: 1
float: 1
Function: Imaginary part of "ccos":
double: 1
float: 1
Function: Real part of "ccos_towardzero":
double: 1
float: 2
Function: Imaginary part of "ccos_towardzero":
double: 3
float: 3
Function: Real part of "ccosh":
double: 1
float: 1
Function: Imaginary part of "ccosh":
double: 1
float: 1
Function: Real part of "ccosh_towardzero":
double: 2
float: 3
Function: Imaginary part of "ccosh_towardzero":
double: 3
float: 3
Function: Real part of "cexp":
double: 2
float: 1
Function: Imaginary part of "cexp":
double: 1
float: 2
Function: Real part of "cexp_towardzero":
double: 2
float: 2
Function: Imaginary part of "cexp_towardzero":
double: 3
float: 3
Function: Real part of "clog":
double: 3
float: 3
Function: Imaginary part of "clog":
float: 1
Function: Real part of "clog10":
double: 3
float: 4
Function: Imaginary part of "clog10":
double: 2
float: 2
Function: Real part of "clog10_towardzero":
double: 5
float: 5
Function: Imaginary part of "clog10_towardzero":
double: 2
float: 3
Function: Real part of "clog_towardzero":
double: 4
float: 4
Function: Imaginary part of "clog_towardzero":
double: 1
float: 3
Function: "cos":
double: 1
float: 1
Function: "cos_towardzero":
double: 1
float: 1
Function: "cosh":
double: 2
float: 2
Function: "cosh_towardzero":
double: 3
float: 1
Function: Real part of "cpow":
double: 2
float: 5
Function: Imaginary part of "cpow":
float: 2
Function: Real part of "cpow_towardzero":
double: 5
float: 8
Function: Imaginary part of "cpow_towardzero":
double: 1
float: 2
Function: Real part of "csin":
double: 1
float: 1
Function: Real part of "csin_towardzero":
double: 3
float: 3
Function: Imaginary part of "csin_towardzero":
double: 1
float: 1
Function: Real part of "csinh":
float: 1
Function: Imaginary part of "csinh":
double: 1
float: 1
Function: Real part of "csinh_towardzero":
double: 2
float: 2
Function: Imaginary part of "csinh_towardzero":
double: 3
float: 3
Function: Real part of "csqrt":
double: 2
float: 2
Function: Imaginary part of "csqrt":
double: 2
float: 2
Function: Real part of "csqrt_towardzero":
double: 4
float: 3
Function: Imaginary part of "csqrt_towardzero":
double: 4
float: 3
Function: Real part of "ctan":
double: 1
float: 1
Function: Imaginary part of "ctan":
double: 2
float: 2
Function: Real part of "ctan_towardzero":
double: 5
float: 3
Function: Imaginary part of "ctan_towardzero":
double: 2
float: 3
Function: Real part of "ctanh":
double: 2
float: 2
Function: Imaginary part of "ctanh":
double: 2
float: 2
Function: Real part of "ctanh_towardzero":
double: 2
float: 3
Function: Imaginary part of "ctanh_towardzero":
double: 5
float: 3
Function: "erf":
double: 1
float: 1
Function: "erf_towardzero":
double: 1
float: 1
Function: "erfc":
double: 5
float: 2
Function: "erfc_towardzero":
double: 3
float: 3
Function: "exp":
double: 1
float: 1
Function: "exp10":
double: 2
Function: "exp10_towardzero":
double: 3
float: 1
Function: "exp2":
double: 1
Function: "exp2_towardzero":
double: 1
Function: "exp_towardzero":
double: 1
float: 1
Function: "expm1":
double: 1
float: 1
Function: "expm1_towardzero":
double: 1
float: 2
Function: "fma_towardzero":
double: 1
Function: "gamma":
double: 4
float: 3
Function: "gamma_towardzero":
double: 5
float: 3
Function: "hypot":
double: 1
Function: "hypot_towardzero":
double: 1
Function: "j0":
double: 2
float: 8
Function: "j0_towardzero":
double: 4
float: 6
Function: "j1":
double: 2
float: 8
Function: "j1_towardzero":
double: 3
float: 2
Function: "jn":
double: 4
float: 4
Function: "jn_towardzero":
double: 5
float: 5
Function: "lgamma":
double: 4
float: 3
Function: "lgamma_towardzero":
double: 5
float: 3
Function: "log":
float: 1
Function: "log10":
double: 2
float: 2
Function: "log10_towardzero":
double: 2
float: 1
Function: "log1p":
double: 1
float: 1
Function: "log1p_towardzero":
double: 2
float: 2
Function: "log2":
double: 2
float: 1
Function: "log2_towardzero":
double: 2
Function: "logp1":
double: 1
float: 1
Function: "logp1_towardzero":
double: 2
float: 2
Function: "pow":
double: 1
float: 1
Function: "pow_towardzero":
double: 1
float: 1
Function: "sin":
double: 1
float: 1
Function: "sin_towardzero":
double: 1
float: 1
Function: "sincos":
double: 1
float: 1
Function: "sincos_towardzero":
double: 1
float: 1
Function: "sinh":
double: 2
float: 2
Function: "sinh_towardzero":
double: 3
float: 2
Function: "tan":
float: 1
Function: "tan_towardzero":
double: 1
float: 1
Function: "tanh":
double: 2
float: 2
Function: "tanh_towardzero":
double: 2
float: 2
Function: "tgamma":
double: 9
Function: "tgamma_towardzero":
double: 9
Function: "y0":
double: 3
float: 6
Function: "y0_towardzero":
double: 3
float: 3
Function: "y1":
double: 3
float: 2
Function: "y1_towardzero":
double: 3
float: 2
Function: "yn":
double: 3
float: 3
Function: "yn_towardzero":
double: 3
float: 3
# end of automatic generation