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| author | Kacper <kacper@mail.openlinux.dev> | 2025-12-09 19:20:15 +0100 |
|---|---|---|
| committer | Kacper <kacper@mail.openlinux.dev> | 2025-12-09 19:20:15 +0100 |
| commit | 885f5974cdf65b59415837ae97f5a14ef1350670 (patch) | |
| tree | 66ac13de29c7f4932c5fcae11773df574e4e256a /lib/libm/sqrt_data.h | |
| parent | 8f9e448b2ef6db7cd905540c21f3c5b190e7a1e7 (diff) | |
feat: add gzip and new headers
Diffstat (limited to 'lib/libm/sqrt_data.h')
| -rw-r--r-- | lib/libm/sqrt_data.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/libm/sqrt_data.h b/lib/libm/sqrt_data.h new file mode 100644 index 00000000..f5929b8d --- /dev/null +++ b/lib/libm/sqrt_data.h @@ -0,0 +1,14 @@ +#ifndef _SQRT_DATA_H +#define _SQRT_DATA_H + +#include <stdint.h> + +#define hidden __attribute__((visibility("hidden"))) + +/* if x in [1,2): i = (int)(64*x); + if x in [2,4): i = (int)(32*x-64); + __rsqrt_tab[i]*2^-16 is estimating 1/sqrt(x) with small relative error: + |__rsqrt_tab[i]*0x1p-16*sqrt(x) - 1| < -0x1.fdp-9 < 2^-8 */ +extern hidden const uint16_t __rsqrt_tab[128]; + +#endif |