diff options
| author | zimmerma <zimmerma@280ebfd0-de03-0410-8827-d642c229c3f4> | 2011-07-31 08:59:53 +0000 |
|---|---|---|
| committer | zimmerma <zimmerma@280ebfd0-de03-0410-8827-d642c229c3f4> | 2011-07-31 08:59:53 +0000 |
| commit | 88b5b5ee10cd8bdc3e10149f486186398be5cb23 (patch) | |
| tree | 84f53f15cc605598c1e7c57e6de4cc63a0b072cc /tune | |
| parent | c3308f4337d0bcb4206eb1058af79c8c82822678 (diff) | |
| download | mpfr-88b5b5ee10cd8bdc3e10149f486186398be5cb23.tar.gz | |
Added tuning for MPFR_DIV_THRESHOLD, and default value.
It now remains to do the tuning on the architectures in mparam_in.h.
git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@7768 280ebfd0-de03-0410-8827-d642c229c3f4
Diffstat (limited to 'tune')
| -rw-r--r-- | tune/tuneup.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/tune/tuneup.c b/tune/tuneup.c index d99cdeddf..66bb52a81 100644 --- a/tune/tuneup.c +++ b/tune/tuneup.c @@ -273,14 +273,18 @@ speed_mpfr_sincos (struct speed_params *s) SPEED_MPFR_FUNC2 (mpfr_sin_cos); } -/* Setup mpfr_mul and mpfr_sqr */ +/* Setup mpfr_mul, mpfr_sqr and mpfr_div */ mpfr_prec_t mpfr_mul_threshold; mpfr_prec_t mpfr_sqr_threshold; +mpfr_prec_t mpfr_div_threshold; #undef MPFR_MUL_THRESHOLD #define MPFR_MUL_THRESHOLD mpfr_mul_threshold #undef MPFR_SQR_THRESHOLD #define MPFR_SQR_THRESHOLD mpfr_sqr_threshold +#undef MPFR_DIV_THRESHOLD +#define MPFR_DIV_THRESHOLD mpfr_div_threshold #include "mul.c" +#include "div.c" static double speed_mpfr_mul (struct speed_params *s) { @@ -291,6 +295,11 @@ speed_mpfr_sqr (struct speed_params *s) { SPEED_MPFR_SQR (mpfr_mul); } +static double +speed_mpfr_div (struct speed_params *s) +{ + SPEED_MPFR_OP (mpfr_div); +} /************************************************ * Common functions (inspired by GMP function) * @@ -1056,6 +1065,14 @@ all (const char *filename) fprintf (f, "#define MPFR_SQR_THRESHOLD %lu /* limbs */\n", (unsigned long) (mpfr_sqr_threshold - 1) / GMP_NUMB_BITS + 1); + /* Tune mpfr_div (threshold is in limbs, but it doesn't matter too much) */ + if (verbose) + printf ("Tuning mpfr_div...\n"); + tune_simple_func (&mpfr_div_threshold, speed_mpfr_div, + 2*GMP_NUMB_BITS+1); + fprintf (f, "#define MPFR_DIV_THRESHOLD %lu /* limbs */\n", + (unsigned long) (mpfr_div_threshold - 1) / GMP_NUMB_BITS + 1); + /* Tune mpfr_exp_2 */ if (verbose) printf ("Tuning mpfr_exp_2...\n"); |