text: /* 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.
   * ====================================================
   */
  
  #include "math.h"
  #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;
  }
  