[src/trunk]: src/lib/libm/src Use FP_ILOGB0 and FP_ILOGBNAN

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/11c2c310c6e2
branches:  trunk
changeset: 784798:11c2c310c6e2
user:      matt <matt%NetBSD.org@localhost>
date:      Sat Feb 09 22:56:00 2013 +0000

description:
Use FP_ILOGB0 and FP_ILOGBNAN

diffstat:

 lib/libm/src/s_ilogb.c  |  6 +++---
 lib/libm/src/s_ilogbf.c |  6 +++---
 lib/libm/src/s_ilogbl.c |  8 ++++----
 3 files changed, 10 insertions(+), 10 deletions(-)

diffs (87 lines):

diff -r 7430eeab7d20 -r 11c2c310c6e2 lib/libm/src/s_ilogb.c
--- a/lib/libm/src/s_ilogb.c    Sat Feb 09 22:33:13 2013 +0000
+++ b/lib/libm/src/s_ilogb.c    Sat Feb 09 22:56:00 2013 +0000
@@ -12,7 +12,7 @@
 
 #include <sys/cdefs.h>
 #if defined(LIBM_SCCS) && !defined(lint)
-__RCSID("$NetBSD: s_ilogb.c,v 1.13 2011/07/28 22:32:29 joerg Exp $");
+__RCSID("$NetBSD: s_ilogb.c,v 1.14 2013/02/09 22:56:00 matt Exp $");
 #endif
 
 /* ilogb(double x)
@@ -38,7 +38,7 @@
        if(hx<0x00100000) {
            GET_LOW_WORD(lx,x);
            if((hx|lx)==0)
-               return 0x80000001;      /* ilogb(0) = 0x80000001 */
+               return FP_ILOGB0;       /* ilogb(0) = 0x80000001 */
            else                        /* subnormal x */
                if(hx==0) {
                    for (ix = -1043; lx>0; lx<<=1) ix -=1;
@@ -48,5 +48,5 @@
            return ix;
        }
        else if (hx<0x7ff00000) return (hx>>20)-1023;
-       else return 0x7fffffff;
+       else return FP_ILOGBNAN;        /* inf too */
 }
diff -r 7430eeab7d20 -r 11c2c310c6e2 lib/libm/src/s_ilogbf.c
--- a/lib/libm/src/s_ilogbf.c   Sat Feb 09 22:33:13 2013 +0000
+++ b/lib/libm/src/s_ilogbf.c   Sat Feb 09 22:56:00 2013 +0000
@@ -15,7 +15,7 @@
 
 #include <sys/cdefs.h>
 #if defined(LIBM_SCCS) && !defined(lint)
-__RCSID("$NetBSD: s_ilogbf.c,v 1.7 2002/05/26 22:01:56 wiz Exp $");
+__RCSID("$NetBSD: s_ilogbf.c,v 1.8 2013/02/09 22:56:00 matt Exp $");
 #endif
 
 #include "math.h"
@@ -30,11 +30,11 @@
        hx &= 0x7fffffff;
        if(hx<0x00800000) {
            if(hx==0)
-               return 0x80000001;      /* ilogb(0) = 0x80000001 */
+               return FP_ILOGB0;       /* ilogb(0) = 0x80000001 */
            else                        /* subnormal x */
                for (ix = -126,hx<<=8; hx>0; hx<<=1) ix -=1;
            return ix;
        }
        else if (hx<0x7f800000) return (hx>>23)-127;
-       else return 0x7fffffff;
+       else return FP_ILOGBNAN;        /* inf too */
 }
diff -r 7430eeab7d20 -r 11c2c310c6e2 lib/libm/src/s_ilogbl.c
--- a/lib/libm/src/s_ilogbl.c   Sat Feb 09 22:33:13 2013 +0000
+++ b/lib/libm/src/s_ilogbl.c   Sat Feb 09 22:56:00 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: s_ilogbl.c,v 1.1 2011/07/28 22:32:29 joerg Exp $       */
+/*     $NetBSD: s_ilogbl.c,v 1.2 2013/02/09 22:56:00 matt Exp $        */
 
 /*-
  * Copyright (c) 2011 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: s_ilogbl.c,v 1.1 2011/07/28 22:32:29 joerg Exp $");
+__RCSID("$NetBSD: s_ilogbl.c,v 1.2 2013/02/09 22:56:00 matt Exp $");
 
 #include "namespace.h"
 
@@ -54,12 +54,12 @@
        union ieee_ext_u u;
 
        if (x == 0.0L)
-               return 0x80000001;      /* ilogbl(0) = 0x80000001 */
+               return FP_ILOGB0;       /* ilogbl(0) = 0x80000001 */
 
        u.extu_ld = x;
 
        if (u.extu_ext.ext_exp == EXT_EXP_INFNAN)
-               return 0x7fffffff;
+               return FP_ILOGBNAN;     /* inf too */
 
        if (u.extu_ext.ext_exp == 0) {
                /*