1 /* s_sinf.c -- float version of s_sin.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
6 * ====================================================
7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
9 * Developed at SunPro, a Sun Microsystems, Inc. business.
10 * Permission to use, copy, modify, and distribute this
11 * software is freely granted, provided that this notice
13 * ====================================================
17 #include "math_private.h"
29 if(ix <= 0x3f490fd8) return __kernel_sinf(x,z,0);
31 /* sin(Inf or NaN) is NaN */
32 else if (ix>=0x7f800000) return x-x;
34 /* argument reduction needed */
36 n = __ieee754_rem_pio2f(x,y);
38 case 0: return __kernel_sinf(y[0],y[1],1);
39 case 1: return __kernel_cosf(y[0],y[1]);
40 case 2: return -__kernel_sinf(y[0],y[1],1);
42 return -__kernel_cosf(y[0],y[1]);