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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-06-07 05:48:48 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-06-07 05:48:48 +0000
commitef24de24a82fe681581cc130f342363c47c0969a (patch)
tree0d494f7e1a38b95c92426f58fe6eaa877303a86c /vendor/libm-0.1.4/src/math/sincosf.rs
parentReleasing progress-linux version 1.74.1+dfsg1-1~progress7.99u1. (diff)
downloadrustc-ef24de24a82fe681581cc130f342363c47c0969a.tar.xz
rustc-ef24de24a82fe681581cc130f342363c47c0969a.zip
Merging upstream version 1.75.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/libm-0.1.4/src/math/sincosf.rs')
-rw-r--r--vendor/libm-0.1.4/src/math/sincosf.rs123
1 files changed, 0 insertions, 123 deletions
diff --git a/vendor/libm-0.1.4/src/math/sincosf.rs b/vendor/libm-0.1.4/src/math/sincosf.rs
deleted file mode 100644
index bb9a00392..000000000
--- a/vendor/libm-0.1.4/src/math/sincosf.rs
+++ /dev/null
@@ -1,123 +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.
- * ====================================================
- */
-
-use super::{k_cosf, k_sinf, rem_pio2f};
-
-/* Small multiples of pi/2 rounded to double precision. */
-const PI_2: f32 = 0.5 * 3.1415926535897931160E+00;
-const S1PIO2: f32 = 1.0 * PI_2; /* 0x3FF921FB, 0x54442D18 */
-const S2PIO2: f32 = 2.0 * PI_2; /* 0x400921FB, 0x54442D18 */
-const S3PIO2: f32 = 3.0 * PI_2; /* 0x4012D97C, 0x7F3321D2 */
-const S4PIO2: f32 = 4.0 * PI_2; /* 0x401921FB, 0x54442D18 */
-
-pub fn sincosf(x: f32) -> (f32, f32) {
- let s: f32;
- let c: f32;
- let mut ix: u32;
- let sign: bool;
-
- ix = x.to_bits();
- sign = (ix >> 31) != 0;
- ix &= 0x7fffffff;
-
- /* |x| ~<= pi/4 */
- if ix <= 0x3f490fda {
- /* |x| < 2**-12 */
- if ix < 0x39800000 {
- /* raise inexact if x!=0 and underflow if subnormal */
-
- let x1p120 = f32::from_bits(0x7b800000); // 0x1p120 == 2^120
- if ix < 0x00100000 {
- force_eval!(x / x1p120);
- } else {
- force_eval!(x + x1p120);
- }
- return (x, 1.0);
- }
- return (k_sinf(x as f64), k_cosf(x as f64));
- }
-
- /* |x| ~<= 5*pi/4 */
- if ix <= 0x407b53d1 {
- if ix <= 0x4016cbe3 {
- /* |x| ~<= 3pi/4 */
- if sign {
- s = -k_cosf((x + S1PIO2) as f64);
- c = k_sinf((x + S1PIO2) as f64);
- } else {
- s = k_cosf((S1PIO2 - x) as f64);
- c = k_sinf((S1PIO2 - x) as f64);
- }
- }
- /* -sin(x+c) is not correct if x+c could be 0: -0 vs +0 */
- else {
- if sign {
- s = k_sinf((x + S2PIO2) as f64);
- c = k_cosf((x + S2PIO2) as f64);
- } else {
- s = k_sinf((x - S2PIO2) as f64);
- c = k_cosf((x - S2PIO2) as f64);
- }
- }
-
- return (s, c);
- }
-
- /* |x| ~<= 9*pi/4 */
- if ix <= 0x40e231d5 {
- if ix <= 0x40afeddf {
- /* |x| ~<= 7*pi/4 */
- if sign {
- s = k_cosf((x + S3PIO2) as f64);
- c = -k_sinf((x + S3PIO2) as f64);
- } else {
- s = -k_cosf((x - S3PIO2) as f64);
- c = k_sinf((x - S3PIO2) as f64);
- }
- } else {
- if sign {
- s = k_cosf((x + S4PIO2) as f64);
- c = k_sinf((x + S4PIO2) as f64);
- } else {
- s = k_cosf((x - S4PIO2) as f64);
- c = k_sinf((x - S4PIO2) as f64);
- }
- }
-
- return (s, c);
- }
-
- /* sin(Inf or NaN) is NaN */
- if ix >= 0x7f800000 {
- let rv = x - x;
- return (rv, rv);
- }
-
- /* general argument reduction needed */
- let (n, y) = rem_pio2f(x);
- s = k_sinf(y);
- c = k_cosf(y);
- match n & 3 {
- 0 => (s, c),
- 1 => (c, -s),
- 2 => (-s, -c),
- 3 => (-c, s),
- #[cfg(feature = "checked")]
- _ => unreachable!(),
- #[cfg(not(feature = "checked"))]
- _ => (0.0, 1.0),
- }
-}