diff --git a/ChangeLog b/ChangeLog
index 055316f86e..b074f4d980 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,21 @@
+2016-05-24  Joseph Myers  <joseph@codesourcery.com>
+
+	[BZ #15479]
+	* sysdeps/ieee754/dbl-64/s_ceil.c: Do not mention "inexact"
+	exception in comment.
+	(huge): Remove variable.
+	(__ceil): Do not force "inexact" exception.
+	* sysdeps/ieee754/dbl-64/wordsize-64/s_ceil.c: Do not mention
+	"inexact" exception in comment.
+	(huge): Remove variable.
+	(__ceil): Do not force "inexact" exception.
+	* sysdeps/ieee754/flt-32/s_ceilf.c (huge): Remove variable.
+	(__ceilf): Do not force "inexact" exception.
+	* sysdeps/ieee754/ldbl-128/s_ceill.c: Do not mention "inexact"
+	exception in comment.
+	(huge): Remove variable.
+	(__ceill): Do not force "inexact" exception.
+
 2016-05-24  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* config.h.in (BIND_NOW): New.
diff --git a/sysdeps/ieee754/dbl-64/s_ceil.c b/sysdeps/ieee754/dbl-64/s_ceil.c
index b2154b407d..c291c26f57 100644
--- a/sysdeps/ieee754/dbl-64/s_ceil.c
+++ b/sysdeps/ieee754/dbl-64/s_ceil.c
@@ -15,15 +15,11 @@
  * Return x rounded toward -inf to integral value
  * Method:
  *	Bit twiddling.
- * Exception:
- *	Inexact flag raised if x not equal to ceil(x).
  */
 
 #include <math.h>
 #include <math_private.h>
 
-static const double huge = 1.0e300;
-
 double
 __ceil (double x)
 {
@@ -33,9 +29,8 @@ __ceil (double x)
   j0 = ((i0 >> 20) & 0x7ff) - 0x3ff;
   if (j0 < 20)
     {
-      if (j0 < 0)       /* raise inexact if x != 0 */
+      if (j0 < 0)
 	{
-	  math_force_eval (huge + x);
 	  /* return 0*sign(x) if |x|<1 */
 	  if (i0 < 0)
 	    {
@@ -51,7 +46,6 @@ __ceil (double x)
 	  i = (0x000fffff) >> j0;
 	  if (((i0 & i) | i1) == 0)
 	    return x;                        /* x is integral */
-	  math_force_eval (huge + x);           /* raise inexact flag */
 	  if (i0 > 0)
 	    i0 += (0x00100000) >> j0;
 	  i0 &= (~i); i1 = 0;
@@ -69,7 +63,6 @@ __ceil (double x)
       i = ((u_int32_t) (0xffffffff)) >> (j0 - 20);
       if ((i1 & i) == 0)
 	return x;                       /* x is integral */
-      math_force_eval (huge + x);               /* raise inexact flag */
       if (i0 > 0)
 	{
 	  if (j0 == 20)
diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_ceil.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_ceil.c
index c687525d4b..faaaf90208 100644
--- a/sysdeps/ieee754/dbl-64/wordsize-64/s_ceil.c
+++ b/sysdeps/ieee754/dbl-64/wordsize-64/s_ceil.c
@@ -15,15 +15,11 @@
  * Return x rounded toward -inf to integral value
  * Method:
  *	Bit twiddling.
- * Exception:
- *	Inexact flag raised if x not equal to ceil(x).
  */
 
 #include <math.h>
 #include <math_private.h>
 
-static const double huge = 1.0e300;
-
 double
 __ceil(double x)
 {
@@ -32,14 +28,13 @@ __ceil(double x)
 	EXTRACT_WORDS64(i0,x);
 	j0 = ((i0>>52)&0x7ff)-0x3ff;
 	if(j0<=51) {
-	    if(j0<0) {	/* raise inexact if x != 0 */
-	      math_force_eval(huge+x);/* return 0*sign(x) if |x|<1 */
+	    if(j0<0) {
+	      /* return 0*sign(x) if |x|<1 */
 	      if(i0<0) {i0=INT64_C(0x8000000000000000);}
 	      else if(i0!=0) { i0=INT64_C(0x3ff0000000000000);}
 	    } else {
 		i = INT64_C(0x000fffffffffffff)>>j0;
 		if((i0&i)==0) return x; /* x is integral */
-		math_force_eval(huge+x);	/* raise inexact flag */
 		if(i0>0) i0 += UINT64_C(0x0010000000000000)>>j0;
 		i0 &= (~i);
 	    }
diff --git a/sysdeps/ieee754/flt-32/s_ceilf.c b/sysdeps/ieee754/flt-32/s_ceilf.c
index 37659ea2ae..bff26c33cb 100644
--- a/sysdeps/ieee754/flt-32/s_ceilf.c
+++ b/sysdeps/ieee754/flt-32/s_ceilf.c
@@ -17,8 +17,6 @@
 #include <math_private.h>
 
 
-static const float huge = 1.0e30;
-
 float
 __ceilf(float x)
 {
@@ -28,14 +26,13 @@ __ceilf(float x)
 	GET_FLOAT_WORD(i0,x);
 	j0 = ((i0>>23)&0xff)-0x7f;
 	if(j0<23) {
-	    if(j0<0) {	/* raise inexact if x != 0 */
-		math_force_eval(huge+x);/* return 0*sign(x) if |x|<1 */
+	    if(j0<0) {
+		/* return 0*sign(x) if |x|<1 */
 		if(i0<0) {i0=0x80000000;}
 		else if(i0!=0) { i0=0x3f800000;}
 	    } else {
 		i = (0x007fffff)>>j0;
 		if((i0&i)==0) return x; /* x is integral */
-		math_force_eval(huge+x);	/* raise inexact flag */
 		if(i0>0) i0 += (0x00800000)>>j0;
 		i0 &= (~i);
 	    }
diff --git a/sysdeps/ieee754/ldbl-128/s_ceill.c b/sysdeps/ieee754/ldbl-128/s_ceill.c
index 9f6bc4ce15..6b736733c1 100644
--- a/sysdeps/ieee754/ldbl-128/s_ceill.c
+++ b/sysdeps/ieee754/ldbl-128/s_ceill.c
@@ -22,15 +22,11 @@ static char rcsid[] = "$NetBSD: $";
  * Return x rounded toward -inf to integral value
  * Method:
  *	Bit twiddling.
- * Exception:
- *	Inexact flag raised if x not equal to ceil(x).
  */
 
 #include <math.h>
 #include <math_private.h>
 
-static const long double huge = 1.0e4930L;
-
 long double __ceill(long double x)
 {
 	int64_t i0,i1,j0;
@@ -38,18 +34,15 @@ long double __ceill(long double x)
 	GET_LDOUBLE_WORDS64(i0,i1,x);
 	j0 = ((i0>>48)&0x7fff)-0x3fff;
 	if(j0<48) {
-	    if(j0<0) { 	/* raise inexact if x != 0 */
-		if(huge+x>0.0) {/* return 0*sign(x) if |x|<1 */
-		    if(i0<0) {i0=0x8000000000000000ULL;i1=0;}
-		    else if((i0|i1)!=0) { i0=0x3fff000000000000ULL;i1=0;}
-		}
+	    if(j0<0) {
+		/* return 0*sign(x) if |x|<1 */
+		if(i0<0) {i0=0x8000000000000000ULL;i1=0;}
+		else if((i0|i1)!=0) { i0=0x3fff000000000000ULL;i1=0;}
 	    } else {
 		i = (0x0000ffffffffffffULL)>>j0;
 		if(((i0&i)|i1)==0) return x; /* x is integral */
-		if(huge+x>0.0) {	/* raise inexact flag */
-		    if(i0>0) i0 += (0x0001000000000000LL)>>j0;
-		    i0 &= (~i); i1=0;
-		}
+		if(i0>0) i0 += (0x0001000000000000LL)>>j0;
+		i0 &= (~i); i1=0;
 	    }
 	} else if (j0>111) {
 	    if(j0==0x4000) return x+x;	/* inf or NaN */
@@ -57,17 +50,15 @@ long double __ceill(long double x)
 	} else {
 	    i = -1ULL>>(j0-48);
 	    if((i1&i)==0) return x;	/* x is integral */
-	    if(huge+x>0.0) { 		/* raise inexact flag */
-		if(i0>0) {
-		    if(j0==48) i0+=1;
-		    else {
-			j = i1+(1LL<<(112-j0));
-			if(j<i1) i0 +=1 ; 	/* got a carry */
-			i1=j;
-		    }
+	    if(i0>0) {
+		if(j0==48) i0+=1;
+		else {
+		    j = i1+(1LL<<(112-j0));
+		    if(j<i1) i0 +=1 ; 	/* got a carry */
+		    i1=j;
 		}
-		i1 &= (~i);
 	    }
+	    i1 &= (~i);
 	}
 	SET_LDOUBLE_WORDS64(x,i0,i1);
 	return x;