aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/libm-ieee754/s_nexttoward.c
diff options
context:
space:
mode:
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/s_nexttoward.c
parent86421aa57ecfd70963ae66848bd6a6dd3b8e0fe6 (diff)
downloadglibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.tar
glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.tar.gz
glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.tar.bz2
glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.zip
Update.
Diffstat (limited to 'sysdeps/libm-ieee754/s_nexttoward.c')
-rw-r--r--sysdeps/libm-ieee754/s_nexttoward.c98
1 files changed, 0 insertions, 98 deletions
diff --git a/sysdeps/libm-ieee754/s_nexttoward.c b/sysdeps/libm-ieee754/s_nexttoward.c
deleted file mode 100644
index 0bb57d8465..0000000000
--- a/sysdeps/libm-ieee754/s_nexttoward.c
+++ /dev/null
@@ -1,98 +0,0 @@
-/* s_nexttoward.c
- * Conversion from s_nextafter.c by Ulrich Drepper, Cygnus Support,
- * drepper@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: $";
-#endif
-
-/* IEEE functions
- * nextafterx(x,y)
- * return the next machine floating-point number of x in the
- * direction toward y.
- * Special cases:
- */
-
-#include "math.h"
-#include "math_private.h"
-
-#ifdef __STDC__
- double __nexttoward(double x, long double y)
-#else
- double __nexttoward(x,y)
- double x;
- long double y;
-#endif
-{
- int32_t hx,ix,iy;
- u_int32_t lx,hy,ly,esy;
-
- EXTRACT_WORDS(hx,lx,x);
- GET_LDOUBLE_WORDS(esy,hy,ly,y);
- ix = hx&0x7fffffff; /* |x| */
- iy = esy&0x7fff; /* |y| */
-
- if(((ix>=0x7ff00000)&&((ix-0x7ff00000)|lx)!=0) || /* x is nan */
- ((iy>=0x7fff)&&((hy|ly)|-(hy|ly))!=0)) /* y is nan */
- return x+y;
- if((long double) x==y) return x; /* x=y, return x */
- if((ix|lx)==0) { /* x == 0 */
- double x2;
- INSERT_WORDS(x,esy&0x8000?0x80000000:0,1);/* return +-minsub */
- x2 = x*x;
- if(x2==x) return x2; else return x; /* raise underflow flag */
- }
- if(hx>=0) { /* x > 0 */
- if (esy>=0x8000||((ix>>20)&0x7ff)>iy
- || (((ix>>20)&0x7ff)==iy
- && (((hx<<11)|(lx>>21))>(hy&0x7fffffff)
- || (((hx<<11)|(lx>>21))==(hy&0x7fffffff)
- && (lx<<11)>ly)))) { /* x > y, x -= ulp */
- if(lx==0) hx -= 1;
- lx -= 1;
- } else { /* x < y, x += ulp */
- lx += 1;
- if(lx==0) hx += 1;
- }
- } else { /* x < 0 */
- if (esy<0x8000||((ix>>20)&0x7ff)>iy
- || (((ix>>20)&0x7ff)==iy
- && (((hx<<11)|(lx>>21))>(hy&0x7fffffff)
- || (((hx<<11)|(lx>>21))==(hy&0x7fffffff)
- && (lx<<11)>ly)))) {/* x < y, x -= ulp */
- if(lx==0) hx -= 1;
- lx -= 1;
- } else { /* x > y, x += ulp */
- lx += 1;
- if(lx==0) hx += 1;
- }
- }
- hy = hx&0x7ff00000;
- if(hy>=0x7ff00000) return x+x; /* overflow */
- if(hy<0x00100000) { /* underflow */
- double x2 = x*x;
- if(x2!=x) { /* raise underflow flag */
- INSERT_WORDS(x2,hx,lx);
- return x2;
- }
- }
- INSERT_WORDS(x,hx,lx);
- return x;
-}
-weak_alias (__nexttoward, nexttoward)
-#ifdef NO_LONG_DOUBLE
-strong_alias (__nexttoward, __nexttowardl)
-weak_alias (__nexttoward, nexttowardl)
-#endif