patches/glibc/2_9/270-ldbl-nexttowardf.patch
branchnewlib
changeset 1365 c4d124ed9f8e
parent 1364 9227d2a2c080
child 1366 5e5d1e6f55d3
     1.1 --- a/patches/glibc/2_9/270-ldbl-nexttowardf.patch	Sat Apr 11 19:03:02 2009 +0000
     1.2 +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.3 @@ -1,68 +0,0 @@
     1.4 -Original patch from: gentoo/src/patchsets/glibc/2.9/1073_all_glibc-ldbl-nexttowardf.patch
     1.5 -
     1.6 --= BEGIN original header =-
     1.7 -ripped from Debian
     1.8 -
     1.9 -this change was made to generic __nexttowardf, but not the long double version
    1.10 -
    1.11 -2008-05-05  Aurelien Jarno  <aurelien@aurel32.net>
    1.12 -
    1.13 -	* sysdeps/ieee754/ldbl-128/s_nexttowardf.c: Include float.h.
    1.14 -	(__nexttowardf): Use math_opt_barrier and
    1.15 -	math_force_eval macros.  If FLT_EVAL_METHOD is not 0, force
    1.16 -	x to float using asm.
    1.17 -
    1.18 --= END original header =-
    1.19 -
    1.20 -diff -durN glibc-2_9.orig/sysdeps/ieee754/ldbl-128/s_nexttowardf.c glibc-2_9/sysdeps/ieee754/ldbl-128/s_nexttowardf.c
    1.21 ---- glibc-2_9.orig/sysdeps/ieee754/ldbl-128/s_nexttowardf.c	1999-07-14 02:09:42.000000000 +0200
    1.22 -+++ glibc-2_9/sysdeps/ieee754/ldbl-128/s_nexttowardf.c	2009-02-02 22:00:59.000000000 +0100
    1.23 -@@ -19,7 +19,8 @@
    1.24 - #endif
    1.25 - 
    1.26 - #include "math.h"
    1.27 --#include "math_private.h"
    1.28 -+#include <math_private.h>
    1.29 -+#include <float.h>
    1.30 - 
    1.31 - #ifdef __STDC__
    1.32 - 	float __nexttowardf(float x, long double y)
    1.33 -@@ -44,10 +45,12 @@
    1.34 - 	   return x+y;
    1.35 - 	if((long double) x==y) return y;	/* x=y, return y */
    1.36 - 	if(ix==0) {				/* x == 0 */
    1.37 --	    float x2;
    1.38 -+	    float u;
    1.39 - 	    SET_FLOAT_WORD(x,(u_int32_t)((hy>>32)&0x80000000)|1);/* return +-minsub*/
    1.40 --	    x2 = x*x;
    1.41 --	    if(x2==x) return x2; else return x;	/* raise underflow flag */
    1.42 -+	    u = math_opt_barrier (x);
    1.43 -+	    u = u * u;
    1.44 -+	    math_force_eval (u);		/* raise underflow flag */
    1.45 -+	    return x;
    1.46 - 	}
    1.47 - 	if(hx>=0) {				/* x > 0 */
    1.48 - 	    if(hy<0||(ix>>23)>(iy>>48)-0x3f80
    1.49 -@@ -67,13 +70,16 @@
    1.50 - 	    }
    1.51 - 	}
    1.52 - 	hy = hx&0x7f800000;
    1.53 --	if(hy>=0x7f800000) return x+x;	/* overflow  */
    1.54 -+	if(hy>=0x7f800000) {
    1.55 -+	  x = x+x;	/* overflow  */
    1.56 -+	  if (FLT_EVAL_METHOD != 0)
    1.57 -+	    /* Force conversion to float.  */
    1.58 -+	    asm ("" : "+m"(x));
    1.59 -+	  return x;
    1.60 -+	}
    1.61 - 	if(hy<0x00800000) {		/* underflow */
    1.62 --	    float x2 = x*x;
    1.63 --	    if(x2!=x) {		/* raise underflow flag */
    1.64 --	        SET_FLOAT_WORD(x2,hx);
    1.65 --		return x2;
    1.66 --	    }
    1.67 -+	    float u = x*x;
    1.68 -+	    math_force_eval (u);	/* raise underflow flag */
    1.69 - 	}
    1.70 - 	SET_FLOAT_WORD(x,hx);
    1.71 - 	return x;