From 8c1ab65c0f548d20b7f177bdb736daaf603340e1 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 15:54:38 +0200 Subject: Adding upstream version 0.0~git20221206.8b7148f. Signed-off-by: Daniel Baumann --- libc-top-half/musl/src/math/sqrt_data.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 libc-top-half/musl/src/math/sqrt_data.h (limited to 'libc-top-half/musl/src/math/sqrt_data.h') diff --git a/libc-top-half/musl/src/math/sqrt_data.h b/libc-top-half/musl/src/math/sqrt_data.h new file mode 100644 index 0000000..260c7f9 --- /dev/null +++ b/libc-top-half/musl/src/math/sqrt_data.h @@ -0,0 +1,13 @@ +#ifndef _SQRT_DATA_H +#define _SQRT_DATA_H + +#include +#include + +/* 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 -- cgit v1.2.3