Update.

	* sysdeps/generic/e_scalb.c: Set invalid exception for invalid
	parameters.
	* sysdeps/generic/e_scalbf.c: New file.
	* sysdeps/generic/e_scalbl.c: New file.

3 files changed, 33 insertions, 9 deletions

diff --git a/sysdeps/generic/e_scalb.c b/sysdeps/generic/e_scalb.c
index d9a326b2b2..2e4094390a 100644
--- a/sysdeps/generic/e_scalb.c
+++ b/sysdeps/generic/e_scalb.c
@@ -5,7 +5,7 @@
  *
  * Developed at SunPro, a Sun Microsystems, Inc. business.
  * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice 
+ * software is freely granted, provided that this notice
  * is preserved.
  * ====================================================
  */
@@ -16,10 +16,11 @@ static char rcsid[] = "$NetBSD: e_scalb.c,v 1.6 1995/05/10 20:46:09 jtc Exp $";
 
 /*
  * __ieee754_scalb(x, fn) is provide for
- * passing various standard test suite. One 
+ * passing various standard test suite. One
  * should use scalbn() instead.
  */
 
+#include <fenv.h>
 #include "math.h"
 #include "math_private.h"
 
@@ -48,10 +49,17 @@ static char rcsid[] = "$NetBSD: e_scalb.c,v 1.6 1995/05/10 20:46:09 jtc Exp $";
 	    else if (x == 0)
 	      return x;
 	    else if (!__finite (x))
-	      return __nan ("");
+	      {
+		feraiseexcept (FE_INVALID);
+		return __nan ("");
+	      }
 	    else       return x/(-fn);
 	}
-	if (__rint(fn)!=fn) return __nan ("");
+	if (__rint(fn)!=fn)
+	  {
+	    feraiseexcept (FE_INVALID);
+	    return __nan ("");
+	  }
 	if ( fn > 65000.0) return __scalbn(x, 65000);
 	if (-fn > 65000.0) return __scalbn(x,-65000);
 	return __scalbn(x,(int)fn);
diff --git a/sysdeps/generic/e_scalbf.c b/sysdeps/generic/e_scalbf.c
index f51057e7b4..9d769f4ce1 100644
--- a/sysdeps/generic/e_scalbf.c
+++ b/sysdeps/generic/e_scalbf.c
@@ -8,7 +8,7 @@
  *
  * Developed at SunPro, a Sun Microsystems, Inc. business.
  * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice 
+ * software is freely granted, provided that this notice
  * is preserved.
  * ====================================================
  */
@@ -17,6 +17,7 @@
 static char rcsid[] = "$NetBSD: e_scalbf.c,v 1.3 1995/05/10 20:46:12 jtc Exp $";
 #endif
 
+#include <fenv.h>
 #include "math.h"
 #include "math_private.h"
 
@@ -45,10 +46,17 @@ static char rcsid[] = "$NetBSD: e_scalbf.c,v 1.3 1995/05/10 20:46:12 jtc Exp $";
 	    else if (x == 0)
 	      return x;
 	    else if (!__finitef (x))
-	      return __nanf ("");
+	      {
+		feraiseexcept (FE_INVALID);
+		return __nanf ("");
+	      }
 	    else       return x/(-fn);
 	}
-	if (__rintf(fn)!=fn) return __nanf ("");
+	if (__rintf(fn)!=fn)
+	  {
+	    feraiseexcept (FE_INVALID);
+	    return __nanf ("");
+	  }
 	if ( fn > (float)65000.0) return __scalbnf(x, 65000);
 	if (-fn > (float)65000.0) return __scalbnf(x,-65000);
 	return __scalbnf(x,(int)fn);
diff --git a/sysdeps/generic/e_scalbl.c b/sysdeps/generic/e_scalbl.c
index dccc876c85..fb2914dc5a 100644
--- a/sysdeps/generic/e_scalbl.c
+++ b/sysdeps/generic/e_scalbl.c
@@ -24,6 +24,7 @@ static char rcsid[] = "$NetBSD: $";
  * should use scalbnl() instead.
  */
 
+#include <fenv.h>
 #include "math.h"
 #include "math_private.h"
 
@@ -52,10 +53,17 @@ static char rcsid[] = "$NetBSD: $";
 	    else if (x == 0)
 	      return x;
 	    else if (!__finitel (x))
-	      return __nanl ("");
+	      {
+		feraiseexcept (FE_INVALID);
+		return __nanl ("");
+	      }
 	    else       return x/(-fn);
 	}
-	if (__rintl(fn)!=fn) return __nanl ("");
+	if (__rintl(fn)!=fn)
+	  {
+	    feraiseexcept (FE_INVALID);
+	    return __nanl ("");
+	  }
 	if ( fn > 65000.0) return __scalbnl(x, 65000);
 	if (-fn > 65000.0) return __scalbnl(x,-65000);
 	return __scalbnl(x,(int)fn);