diff options
Diffstat (limited to 'math/math_config.h')
| -rw-r--r-- | math/math_config.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/math/math_config.h b/math/math_config.h index 9b9e102..3383e70 100644 --- a/math/math_config.h +++ b/math/math_config.h @@ -54,6 +54,15 @@ # endif #endif +/* Compiler can inline fma as a single instruction. */ +#ifndef HAVE_FAST_FMA +# if __aarch64__ +# define HAVE_FAST_FMA 1 +# else +# define HAVE_FAST_FMA 0 +# endif +#endif + #if HAVE_FAST_ROUND # define TOINT_INTRINSICS 1 @@ -286,4 +295,18 @@ extern const struct exp_data { uint64_t tab[2*(1 << EXP_TABLE_BITS)]; } __exp_data HIDDEN; +#define LOG_TABLE_BITS 7 +#define LOG_POLY_ORDER 6 +#define LOG_POLY1_ORDER 12 +extern const struct log_data { + double ln2hi; + double ln2lo; + double poly[LOG_POLY_ORDER - 1]; /* First coefficient is 1. */ + double poly1[LOG_POLY1_ORDER - 1]; + struct {double invc, logc;} tab[1 << LOG_TABLE_BITS]; +#if !HAVE_FAST_FMA + struct {double chi, clo;} tab2[1 << LOG_TABLE_BITS]; +#endif +} __log_data HIDDEN; + #endif |