diff options
author | Ian Moffett <ian@osmora.org> | 2024-03-07 17:28:52 -0500 |
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committer | Ian Moffett <ian@osmora.org> | 2024-03-07 18:24:51 -0500 |
commit | f5e48e94a2f4d4bbd6e5628c7f2afafc6dbcc459 (patch) | |
tree | 93b156621dc0303816b37f60ba88051b702d92f6 /lib/mlibc/options/ansi/musl-generic-math/sincosf.c | |
parent | bd5969fc876a10b18613302db7087ef3c40f18e1 (diff) |
build: Build mlibc + add distclean target
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'lib/mlibc/options/ansi/musl-generic-math/sincosf.c')
-rw-r--r-- | lib/mlibc/options/ansi/musl-generic-math/sincosf.c | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/lib/mlibc/options/ansi/musl-generic-math/sincosf.c b/lib/mlibc/options/ansi/musl-generic-math/sincosf.c deleted file mode 100644 index f8ca723..0000000 --- a/lib/mlibc/options/ansi/musl-generic-math/sincosf.c +++ /dev/null @@ -1,117 +0,0 @@ -/* origin: FreeBSD /usr/src/lib/msun/src/s_sinf.c */ -/* - * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. - * Optimized by Bruce D. Evans. - */ -/* - * ==================================================== - * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. - * - * Developed at SunPro, a Sun Microsystems, Inc. business. - * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice - * is preserved. - * ==================================================== - */ - -#define _GNU_SOURCE -#include "libm.h" - -/* Small multiples of pi/2 rounded to double precision. */ -static const double -s1pio2 = 1*M_PI_2, /* 0x3FF921FB, 0x54442D18 */ -s2pio2 = 2*M_PI_2, /* 0x400921FB, 0x54442D18 */ -s3pio2 = 3*M_PI_2, /* 0x4012D97C, 0x7F3321D2 */ -s4pio2 = 4*M_PI_2; /* 0x401921FB, 0x54442D18 */ - -void sincosf(float x, float *sin, float *cos) -{ - double y; - float_t s, c; - uint32_t ix; - unsigned n, sign; - - GET_FLOAT_WORD(ix, x); - sign = ix >> 31; - ix &= 0x7fffffff; - - /* |x| ~<= pi/4 */ - if (ix <= 0x3f490fda) { - /* |x| < 2**-12 */ - if (ix < 0x39800000) { - /* raise inexact if x!=0 and underflow if subnormal */ - FORCE_EVAL(ix < 0x00100000 ? x/0x1p120f : x+0x1p120f); - *sin = x; - *cos = 1.0f; - return; - } - *sin = __sindf(x); - *cos = __cosdf(x); - return; - } - - /* |x| ~<= 5*pi/4 */ - if (ix <= 0x407b53d1) { - if (ix <= 0x4016cbe3) { /* |x| ~<= 3pi/4 */ - if (sign) { - *sin = -__cosdf(x + s1pio2); - *cos = __sindf(x + s1pio2); - } else { - *sin = __cosdf(s1pio2 - x); - *cos = __sindf(s1pio2 - x); - } - return; - } - /* -sin(x+c) is not correct if x+c could be 0: -0 vs +0 */ - *sin = -__sindf(sign ? x + s2pio2 : x - s2pio2); - *cos = -__cosdf(sign ? x + s2pio2 : x - s2pio2); - return; - } - - /* |x| ~<= 9*pi/4 */ - if (ix <= 0x40e231d5) { - if (ix <= 0x40afeddf) { /* |x| ~<= 7*pi/4 */ - if (sign) { - *sin = __cosdf(x + s3pio2); - *cos = -__sindf(x + s3pio2); - } else { - *sin = -__cosdf(x - s3pio2); - *cos = __sindf(x - s3pio2); - } - return; - } - *sin = __sindf(sign ? x + s4pio2 : x - s4pio2); - *cos = __cosdf(sign ? x + s4pio2 : x - s4pio2); - return; - } - - /* sin(Inf or NaN) is NaN */ - if (ix >= 0x7f800000) { - *sin = *cos = x - x; - return; - } - - /* general argument reduction needed */ - n = __rem_pio2f(x, &y); - s = __sindf(y); - c = __cosdf(y); - switch (n&3) { - case 0: - *sin = s; - *cos = c; - break; - case 1: - *sin = c; - *cos = -s; - break; - case 2: - *sin = -s; - *cos = -c; - break; - case 3: - default: - *sin = -c; - *cos = s; - break; - } -} |