Server : Apache/2.4.41 (Ubuntu) System : Linux absol.cf 5.4.0-198-generic #218-Ubuntu SMP Fri Sep 27 20:18:53 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.33 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /proc/thread-self/root/usr/share/emscripten/system/lib/libc/musl/src/math/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

/* origin: FreeBSD /usr/src/lib/msun/src/k_cosf.c */
/*
 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
 * Debugged and 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.
 * ====================================================
 */

#include "libm.h"

/* |cos(x) - c(x)| < 2**-34.1 (~[-5.37e-11, 5.295e-11]). */
static const double
C0  = -0x1ffffffd0c5e81.0p-54, /* -0.499999997251031003120 */
C1  =  0x155553e1053a42.0p-57, /*  0.0416666233237390631894 */
C2  = -0x16c087e80f1e27.0p-62, /* -0.00138867637746099294692 */
C3  =  0x199342e0ee5069.0p-68; /*  0.0000243904487962774090654 */

float __cosdf(double x)
{
	double_t r, w, z;

	/* Try to optimize for parallel evaluation as in __tandf.c. */
	z = x*x;
	w = z*z;
	r = C2+z*C3;
	return ((1.0+z*C0) + w*C1) + (w*z)*r;
}