svn commit: r306409 - head/lib/msun/src

[Ed Maste]

Author: emaste
Date: Wed Sep 28 14:48:34 2016
New Revision: 306409
URL: https://svnweb.freebsd.org/changeset/base/306409

Log:
  libm: fix some unused variable (rcsid) and dangling else warnings
  
  s_{fabs,fmax,logb,scalb}{,f,l}.c may be built elsewhere with a higher
  WARNS setting.
  
  Reviewed by:	ed
  Sponsored by:	The FreeBSD Foundation
  Differential Revision:	https://reviews.freebsd.org/D8061

Modified:
  head/lib/msun/src/s_fabs.c
  head/lib/msun/src/s_logbl.c
  head/lib/msun/src/s_scalbn.c
  head/lib/msun/src/s_scalbnf.c
  head/lib/msun/src/s_scalbnl.c

Modified: head/lib/msun/src/s_fabs.c
==============================================================================
--- head/lib/msun/src/s_fabs.c	Wed Sep 28 14:13:41 2016	(r306408)
+++ head/lib/msun/src/s_fabs.c	Wed Sep 28 14:48:34 2016	(r306409)
@@ -10,9 +10,8 @@
  * ====================================================
  */
 
-#ifndef lint
-static char rcsid[] = "$FreeBSD$";
-#endif
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
 
 /*
  * fabs(x) returns the absolute value of x.

Modified: head/lib/msun/src/s_logbl.c
==============================================================================
--- head/lib/msun/src/s_logbl.c	Wed Sep 28 14:13:41 2016	(r306408)
+++ head/lib/msun/src/s_logbl.c	Wed Sep 28 14:48:34 2016	(r306409)
@@ -10,9 +10,8 @@
  * ====================================================
  */
 
-#ifndef lint
-static char rcsid[] = "$FreeBSD$";
-#endif
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
 
 #include <float.h>
 #include <limits.h>

Modified: head/lib/msun/src/s_scalbn.c
==============================================================================
--- head/lib/msun/src/s_scalbn.c	Wed Sep 28 14:13:41 2016	(r306408)
+++ head/lib/msun/src/s_scalbn.c	Wed Sep 28 14:48:34 2016	(r306409)
@@ -10,9 +10,8 @@
  * ====================================================
  */
 
-#ifndef lint
-static char rcsid[] = "$FreeBSD$";
-#endif
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
 
 /*
  * scalbn (double x, int n)
@@ -21,7 +20,6 @@ static char rcsid[] = "$FreeBSD$";
  * exponentiation or a multiplication.
  */
 
-#include <sys/cdefs.h>
 #include <float.h>
 
 #include "math.h"
@@ -51,10 +49,12 @@ scalbn (double x, int n)
         if (k >  0x7fe) return huge*copysign(huge,x); /* overflow  */
         if (k > 0) 				/* normal result */
 	    {SET_HIGH_WORD(x,(hx&0x800fffff)|(k<<20)); return x;}
-        if (k <= -54)
+        if (k <= -54) {
             if (n > 50000) 	/* in case integer overflow in n+k */
 		return huge*copysign(huge,x);	/*overflow*/
-	    else return tiny*copysign(tiny,x); 	/*underflow*/
+	    else
+		return tiny*copysign(tiny,x); 	/*underflow*/
+	}
         k += 54;				/* subnormal result */
 	SET_HIGH_WORD(x,(hx&0x800fffff)|(k<<20));
         return x*twom54;

Modified: head/lib/msun/src/s_scalbnf.c
==============================================================================
--- head/lib/msun/src/s_scalbnf.c	Wed Sep 28 14:13:41 2016	(r306408)
+++ head/lib/msun/src/s_scalbnf.c	Wed Sep 28 14:48:34 2016	(r306409)
@@ -13,11 +13,8 @@
  * ====================================================
  */
 
-#ifndef lint
-static char rcsid[] = "$FreeBSD$";
-#endif
-
 #include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
 
 #include "math.h"
 #include "math_private.h"
@@ -46,10 +43,12 @@ scalbnf (float x, int n)
         if (k >  0xfe) return huge*copysignf(huge,x); /* overflow  */
         if (k > 0) 				/* normal result */
 	    {SET_FLOAT_WORD(x,(ix&0x807fffff)|(k<<23)); return x;}
-        if (k <= -25)
+        if (k <= -25) {
             if (n > 50000) 	/* in case integer overflow in n+k */
 		return huge*copysignf(huge,x);	/*overflow*/
-	    else return tiny*copysignf(tiny,x);	/*underflow*/
+	    else
+		return tiny*copysignf(tiny,x);	/*underflow*/
+	}
         k += 25;				/* subnormal result */
 	SET_FLOAT_WORD(x,(ix&0x807fffff)|(k<<23));
         return x*twom25;

Modified: head/lib/msun/src/s_scalbnl.c
==============================================================================
--- head/lib/msun/src/s_scalbnl.c	Wed Sep 28 14:13:41 2016	(r306408)
+++ head/lib/msun/src/s_scalbnl.c	Wed Sep 28 14:48:34 2016	(r306409)
@@ -10,9 +10,8 @@
  * ====================================================
  */
 
-#ifndef lint
-static char rcsid[] = "$FreeBSD$";
-#endif
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
 
 /*
  * scalbnl (long double x, int n)
@@ -27,7 +26,6 @@ static char rcsid[] = "$FreeBSD$";
  * for scalbn(), so we don't use this routine.
  */
 
-#include <sys/cdefs.h>
 #include <float.h>
 #include <math.h>
 
@@ -59,10 +57,12 @@ scalbnl (long double x, int n)
         if (k >= 0x7fff) return huge*copysignl(huge,x); /* overflow  */
         if (k > 0) 				/* normal result */
 	    {u.bits.exp = k; return u.e;}
-        if (k <= -128)
+        if (k <= -128) {
             if (n > 50000) 	/* in case integer overflow in n+k */
 		return huge*copysign(huge,x);	/*overflow*/
-	    else return tiny*copysign(tiny,x); 	/*underflow*/
+	    else
+		return tiny*copysign(tiny,x); 	/*underflow*/
+	}
         k += 128;				/* subnormal result */
 	u.bits.exp = k;
         return u.e*0x1p-128;