[cmucl-commit] [git] CMU Common Lisp branch master updated. snapshot-2014-09-11-g32ad743

[Raymond Toy]

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       via  68d2565d81c3db6aa23943d9f371213914b3747c (commit)
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- Log -----------------------------------------------------------------
commit 32ad743155af81b7c3e2ee31726272a85e8f3247
Author: Raymond Toy <toy.raymond at gmail.com>
Date:   Sat Sep 20 13:48:07 2014 -0700

    Use fdlibm_setexception to signal appropriate exceptions.

diff --git a/src/lisp/e_log10.c b/src/lisp/e_log10.c
index f963cc7..73fa7f3 100644
--- a/src/lisp/e_log10.c
+++ b/src/lisp/e_log10.c
@@ -77,8 +77,8 @@ static double zero   =  0.0;
         k=0;
         if (hx < 0x00100000) {                  /* x < 2**-1022  */
             if (((hx&0x7fffffff)|lx)==0)
-                return -two54/zero;             /* log(+-0)=-inf */
-            if (hx<0) return (x-x)/zero;        /* log(-#) = NaN */
+              return fdlibm_setexception(-1.0, FDLIBM_DIVIDE_BY_ZERO); /* log(+-0)=-inf */
+            if (hx<0) return fdlibm_setexception(x-x, FDLIBM_INVALID); /* log(-#) = NaN */
             k -= 54; x *= two54; /* subnormal number, scale up x */
             ux.d = x;
             hx = ux.i[HIWORD];

commit 68d2565d81c3db6aa23943d9f371213914b3747c
Author: Raymond Toy <toy.raymond at gmail.com>
Date:   Sat Sep 20 13:27:43 2014 -0700

    Update to use a union.

diff --git a/src/lisp/e_log10.c b/src/lisp/e_log10.c
index dc7e312..f963cc7 100644
--- a/src/lisp/e_log10.c
+++ b/src/lisp/e_log10.c
@@ -68,9 +68,11 @@ static double zero   =  0.0;
 	double y,z;
 	int i,k,hx;
 	unsigned lx;
+	union { int i[2]; double d; } ux;
 
-	hx = __HI(x);	/* high word of x */
-	lx = __LO(x);	/* low word of x */
+        ux.d = x;
+        hx = ux.i[HIWORD];
+        lx = ux.i[LOWORD];
 
         k=0;
         if (hx < 0x00100000) {                  /* x < 2**-1022  */
@@ -78,14 +80,16 @@ static double zero   =  0.0;
                 return -two54/zero;             /* log(+-0)=-inf */
             if (hx<0) return (x-x)/zero;        /* log(-#) = NaN */
             k -= 54; x *= two54; /* subnormal number, scale up x */
-            hx = __HI(x);                /* high word of x */
+            ux.d = x;
+            hx = ux.i[HIWORD];
         }
 	if (hx >= 0x7ff00000) return x+x;
 	k += (hx>>20)-1023;
 	i  = ((unsigned)k&0x80000000)>>31;
         hx = (hx&0x000fffff)|((0x3ff-i)<<20);
         y  = (double)(k+i);
-        __HI(x) = hx;
+        ux.i[HIWORD] = hx;
+        x = ux.d;
 	z  = y*log10_2lo + ivln10*__ieee754_log(x);
 	return  z+y*log10_2hi;
 }

-----------------------------------------------------------------------

Summary of changes:
 src/lisp/e_log10.c |   16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)


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