| /* |
| * ==================================================== |
| * 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 "bsd_privatef.h" |
| |
| float bsd__ieee754_remainderf(float x, float p) |
| { |
| int32_t hx,hp; |
| u_int32_t sx; |
| float p_half; |
| |
| GET_FLOAT_WORD(hx,x); |
| GET_FLOAT_WORD(hp,p); |
| sx = hx&0x80000000; |
| hp &= 0x7fffffff; |
| hx &= 0x7fffffff; |
| |
| /* purge off exception values */ |
| if(hp==0) return (x*p)/(x*p); /* p = 0 */ |
| if((hx>=0x7f800000)|| /* x not finite */ |
| ((hp>0x7f800000))) /* p is NaN */ |
| return ((long double)x*p)/((long double)x*p); |
| |
| |
| if (hp<=0x7effffff) x = bsd__ieee754_fmodf(x,p+p); /* now x < 2p */ |
| if ((hx-hp)==0) return zero*x; |
| x = fabsf(x); |
| p = fabsf(p); |
| if (hp<0x01000000) { |
| if(x+x>p) { |
| x-=p; |
| if(x+x>=p) x -= p; |
| } |
| } else { |
| p_half = (float)0.5*p; |
| if(x>p_half) { |
| x-=p; |
| if(x>=p_half) x -= p; |
| } |
| } |
| GET_FLOAT_WORD(hx,x); |
| if ((hx&0x7fffffff)==0) hx = 0; |
| SET_FLOAT_WORD(x,hx^sx); |
| return x; |
| } |
