Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

===================================================================
RCS file: /ftp/cvs/cvsroot/src/lib/libm/src/k_standard.c,v
rcsdiff: /ftp/cvs/cvsroot/src/lib/libm/src/k_standard.c,v: warning: Unknown phrases like `commitid ...;' are present.
retrieving revision 1.11
retrieving revision 1.12
diff -u -p -r1.11 -r1.12
--- src/lib/libm/src/k_standard.c	2002/05/26 22:01:53	1.11
+++ src/lib/libm/src/k_standard.c	2005/07/21 16:58:39	1.12
@@ -12,7 +12,7 @@
 
 #include <sys/cdefs.h>
 #if defined(LIBM_SCCS) && !defined(lint)
-__RCSID("$NetBSD: k_standard.c,v 1.11 2002/05/26 22:01:53 wiz Exp $");
+__RCSID("$NetBSD: k_standard.c,v 1.12 2005/07/21 16:58:39 christos Exp $");
 #endif
 
 #include "math.h"
@@ -75,6 +75,8 @@ static const double zero = 0.0;	/* used 
  *	40-- gamma(finite) overflow
  *	41-- gamma(-integer)
  *	42-- pow(NaN,0.0)
+ *	48-- log2(0)
+ *	49-- log2(x<0)
  */
 
 
@@ -770,6 +772,42 @@ __kernel_standard(double x, double y, in
 			errno = EDOM;
 		}
 		break;
+	    case 48:
+	    case 148:
+		/* log2(0) */
+		exc.type = SING;
+		exc.name = type < 100 ? "log2" : "log2f";
+		if (_LIB_VERSION == _SVID_)
+		  exc.retval = -HUGE;
+		else
+		  exc.retval = -HUGE_VAL;
+		if (_LIB_VERSION == _POSIX_)
+		  errno = ERANGE;
+		else if (!matherr(&exc)) {
+		  if (_LIB_VERSION == _SVID_) {
+			(void) WRITE2("log2: SING error\n", 18);
+		      }
+		  errno = EDOM;
+		}
+		break;
+	    case 49:
+	    case 149:
+		/* log2(x<0) */
+		exc.type = DOMAIN;
+		exc.name = type < 100 ? "log2" : "log2f";
+		if (_LIB_VERSION == _SVID_)
+		  exc.retval = -HUGE;
+		else
+		  exc.retval = -HUGE_VAL;
+		if (_LIB_VERSION == _POSIX_)
+		  errno = EDOM;
+		else if (!matherr(&exc)) {
+		  if (_LIB_VERSION == _SVID_) {
+			(void) WRITE2("log2: DOMAIN error\n", 20);
+		      }
+		  errno = EDOM;
+		}
+		break;
 	}
 	return exc.retval;
 }