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authorUlrich Drepper <drepper@redhat.com>1999-07-14 00:54:57 +0000
committerUlrich Drepper <drepper@redhat.com>1999-07-14 00:54:57 +0000
commitabfbdde177c3a7155070dda1b2cdc8292054cc26 (patch)
treee021306b596381fbf8311d2b7eb294e918ff17c8 /sysdeps/libm-ieee754/e_fmodf.c
parent86421aa57ecfd70963ae66848bd6a6dd3b8e0fe6 (diff)
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Update.
Diffstat (limited to 'sysdeps/libm-ieee754/e_fmodf.c')
-rw-r--r--sysdeps/libm-ieee754/e_fmodf.c113
1 files changed, 0 insertions, 113 deletions
diff --git a/sysdeps/libm-ieee754/e_fmodf.c b/sysdeps/libm-ieee754/e_fmodf.c
deleted file mode 100644
index 47b312392c..0000000000
--- a/sysdeps/libm-ieee754/e_fmodf.c
+++ /dev/null
@@ -1,113 +0,0 @@
-/* e_fmodf.c -- float version of e_fmod.c.
- * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
- */
-
-/*
- * ====================================================
- * 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.
- * ====================================================
- */
-
-#if defined(LIBM_SCCS) && !defined(lint)
-static char rcsid[] = "$NetBSD: e_fmodf.c,v 1.4 1995/05/10 20:45:10 jtc Exp $";
-#endif
-
-/* 
- * __ieee754_fmodf(x,y)
- * Return x mod y in exact arithmetic
- * Method: shift and subtract
- */
-
-#include "math.h"
-#include "math_private.h"
-
-#ifdef __STDC__
-static const float one = 1.0, Zero[] = {0.0, -0.0,};
-#else
-static float one = 1.0, Zero[] = {0.0, -0.0,};
-#endif
-
-#ifdef __STDC__
-	float __ieee754_fmodf(float x, float y)
-#else
-	float __ieee754_fmodf(x,y)
-	float x,y ;
-#endif
-{
-	int32_t n,hx,hy,hz,ix,iy,sx,i;
-
-	GET_FLOAT_WORD(hx,x);
-	GET_FLOAT_WORD(hy,y);
-	sx = hx&0x80000000;		/* sign of x */
-	hx ^=sx;		/* |x| */
-	hy &= 0x7fffffff;	/* |y| */
-
-    /* purge off exception values */
-	if(hy==0||(hx>=0x7f800000)||		/* y=0,or x not finite */
-	   (hy>0x7f800000))			/* or y is NaN */
-	    return (x*y)/(x*y);
-	if(hx<hy) return x;			/* |x|<|y| return x */
-	if(hx==hy)
-	    return Zero[(u_int32_t)sx>>31];	/* |x|=|y| return x*0*/
-
-    /* determine ix = ilogb(x) */
-	if(hx<0x00800000) {	/* subnormal x */
-	    for (ix = -126,i=(hx<<8); i>0; i<<=1) ix -=1;
-	} else ix = (hx>>23)-127;
-
-    /* determine iy = ilogb(y) */
-	if(hy<0x00800000) {	/* subnormal y */
-	    for (iy = -126,i=(hy<<8); i>=0; i<<=1) iy -=1;
-	} else iy = (hy>>23)-127;
-
-    /* set up {hx,lx}, {hy,ly} and align y to x */
-	if(ix >= -126) 
-	    hx = 0x00800000|(0x007fffff&hx);
-	else {		/* subnormal x, shift x to normal */
-	    n = -126-ix;
-	    hx = hx<<n;
-	}
-	if(iy >= -126) 
-	    hy = 0x00800000|(0x007fffff&hy);
-	else {		/* subnormal y, shift y to normal */
-	    n = -126-iy;
-	    hy = hy<<n;
-	}
-
-    /* fix point fmod */
-	n = ix - iy;
-	while(n--) {
-	    hz=hx-hy;
-	    if(hz<0){hx = hx+hx;}
-	    else {
-	    	if(hz==0) 		/* return sign(x)*0 */
-		    return Zero[(u_int32_t)sx>>31];
-	    	hx = hz+hz;
-	    }
-	}
-	hz=hx-hy;
-	if(hz>=0) {hx=hz;}
-
-    /* convert back to floating value and restore the sign */
-	if(hx==0) 			/* return sign(x)*0 */
-	    return Zero[(u_int32_t)sx>>31];	
-	while(hx<0x00800000) {		/* normalize x */
-	    hx = hx+hx;
-	    iy -= 1;
-	}
-	if(iy>= -126) {		/* normalize output */
-	    hx = ((hx-0x00800000)|((iy+127)<<23));
-	    SET_FLOAT_WORD(x,hx|sx);
-	} else {		/* subnormal output */
-	    n = -126 - iy;
-	    hx >>= n;
-	    SET_FLOAT_WORD(x,hx|sx);
-	    x *= one;		/* create necessary signal */
-	}
-	return x;		/* exact output */
-}