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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 01:47:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 01:47:29 +0000
commit0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch)
treea31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /modules/fdlibm/src/k_sinf.cpp
parentInitial commit. (diff)
downloadfirefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz
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Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'modules/fdlibm/src/k_sinf.cpp')
-rw-r--r--modules/fdlibm/src/k_sinf.cpp45
1 files changed, 45 insertions, 0 deletions
diff --git a/modules/fdlibm/src/k_sinf.cpp b/modules/fdlibm/src/k_sinf.cpp
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+/* k_sinf.c -- float version of k_sin.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.
+ * ====================================================
+ */
+
+#ifndef INLINE_KERNEL_SINDF
+//#include <sys/cdefs.h>
+//__FBSDID("$FreeBSD$");
+#endif
+
+#include "math_private.h"
+
+/* |sin(x)/x - s(x)| < 2**-37.5 (~[-4.89e-12, 4.824e-12]). */
+static const double
+S1 = -0x15555554cbac77.0p-55, /* -0.166666666416265235595 */
+S2 = 0x111110896efbb2.0p-59, /* 0.0083333293858894631756 */
+S3 = -0x1a00f9e2cae774.0p-65, /* -0.000198393348360966317347 */
+S4 = 0x16cd878c3b46a7.0p-71; /* 0.0000027183114939898219064 */
+
+#ifdef INLINE_KERNEL_SINDF
+static __inline
+#endif
+float
+__kernel_sindf(double x)
+{
+ double r, s, w, z;
+
+ /* Try to optimize for parallel evaluation as in k_tanf.c. */
+ z = x*x;
+ w = z*z;
+ r = S3+z*S4;
+ s = z*x;
+ return (x + s*(S1+z*S2)) + s*w*r;
+}