Use uint32_t sign in single precision math error handling functions

Ideally sign should be bool, but sometimes (e.g. in powf) it's more
efficient to pass a non-zero value than 1 to indicate that the sign
should be set.  The fixed size int is less ambigous than unsigned
long.

	* sysdeps/ieee754/flt-32/e_powf.c (__powf): Use uint32_t.
	(exp2f_inline): Likewise.
	* sysdeps/ieee754/flt-32/math_config.h (__math_oflowf): Likewise.
	(__math_uflowf): Likewise.
	(__math_may_uflowf): Likewise.
	(__math_divzerof): Likewise.
	(__math_invalidf): Likewise.
	* sysdeps/ieee754/flt-32/math_errf.c (xflowf): Likewise.
	(__math_oflowf): Likewise.
	(__math_uflowf): Likewise.
	(__math_may_uflowf): Likewise.
	(__math_divzerof): Likewise.
	(__math_invalidf): Likewise.

4 files changed, 27 insertions, 11 deletions

diff --git a/ChangeLog b/ChangeLog
index 3371a9b670..5054985310 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,19 @@
+2018-07-02  Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* sysdeps/ieee754/flt-32/e_powf.c (__powf): Use uint32_t.
+	(exp2f_inline): Likewise.
+	* sysdeps/ieee754/flt-32/math_config.h (__math_oflowf): Likewise.
+	(__math_uflowf): Likewise.
+	(__math_may_uflowf): Likewise.
+	(__math_divzerof): Likewise.
+	(__math_invalidf): Likewise.
+	* sysdeps/ieee754/flt-32/math_errf.c (xflowf): Likewise.
+	(__math_oflowf): Likewise.
+	(__math_uflowf): Likewise.
+	(__math_may_uflowf): Likewise.
+	(__math_divzerof): Likewise.
+	(__math_invalidf): Likewise.
+
 2018-06-29  DJ Delorie  <dj@redhat.com>
 	    Carlos O'Donell  <carlos@redhat.com>
 
diff --git a/sysdeps/ieee754/flt-32/e_powf.c b/sysdeps/ieee754/flt-32/e_powf.c
index 90661e2216..ece83f0dd2 100644
--- a/sysdeps/ieee754/flt-32/e_powf.c
+++ b/sysdeps/ieee754/flt-32/e_powf.c
@@ -84,7 +84,7 @@ log2_inline (uint32_t ix)
    (in case of fast toint intrinsics) or not.  The unscaled xd must be
    in [-1021,1023], sign_bias sets the sign of the result.  */
 static inline double_t
-exp2_inline (double_t xd, unsigned long sign_bias)
+exp2_inline (double_t xd, uint32_t sign_bias)
 {
   uint64_t ki, ski, t;
   /* double_t for better performance on targets with FLT_EVAL_METHOD==2.  */
@@ -143,7 +143,7 @@ zeroinfnan (uint32_t ix)
 float
 __powf (float x, float y)
 {
-  unsigned long sign_bias = 0;
+  uint32_t sign_bias = 0;
   uint32_t ix, iy;
 
   ix = asuint (x);
diff --git a/sysdeps/ieee754/flt-32/math_config.h b/sysdeps/ieee754/flt-32/math_config.h
index c4def9bbc1..9c4ef30173 100644
--- a/sysdeps/ieee754/flt-32/math_config.h
+++ b/sysdeps/ieee754/flt-32/math_config.h
@@ -102,10 +102,10 @@ issignalingf_inline (float x)
 
 #define NOINLINE __attribute__ ((noinline))
 
-attribute_hidden float __math_oflowf (unsigned long);
-attribute_hidden float __math_uflowf (unsigned long);
-attribute_hidden float __math_may_uflowf (unsigned long);
-attribute_hidden float __math_divzerof (unsigned long);
+attribute_hidden float __math_oflowf (uint32_t);
+attribute_hidden float __math_uflowf (uint32_t);
+attribute_hidden float __math_may_uflowf (uint32_t);
+attribute_hidden float __math_divzerof (uint32_t);
 attribute_hidden float __math_invalidf (float);
 
 /* Shared between expf, exp2f and powf.  */
diff --git a/sysdeps/ieee754/flt-32/math_errf.c b/sysdeps/ieee754/flt-32/math_errf.c
index 7d58c0b855..5bc7ac6ef5 100644
--- a/sysdeps/ieee754/flt-32/math_errf.c
+++ b/sysdeps/ieee754/flt-32/math_errf.c
@@ -33,14 +33,14 @@ with_errnof (float y, int e)
 
 /* NOINLINE prevents fenv semantics breaking optimizations.  */
 NOINLINE static float
-xflowf (unsigned long sign, float y)
+xflowf (uint32_t sign, float y)
 {
   y = (sign ? -y : y) * y;
   return with_errnof (y, ERANGE);
 }
 
 attribute_hidden float
-__math_uflowf (unsigned long sign)
+__math_uflowf (uint32_t sign)
 {
   return xflowf (sign, 0x1p-95f);
 }
@@ -49,20 +49,20 @@ __math_uflowf (unsigned long sign)
 /* Underflows to zero in some non-nearest rounding mode, setting errno
    is valid even if the result is non-zero, but in the subnormal range.  */
 attribute_hidden float
-__math_may_uflowf (unsigned long sign)
+__math_may_uflowf (uint32_t sign)
 {
   return xflowf (sign, 0x1.4p-75f);
 }
 #endif
 
 attribute_hidden float
-__math_oflowf (unsigned long sign)
+__math_oflowf (uint32_t sign)
 {
   return xflowf (sign, 0x1p97f);
 }
 
 attribute_hidden float
-__math_divzerof (unsigned long sign)
+__math_divzerof (uint32_t sign)
 {
   float y = 0;
   return with_errnof ((sign ? -1 : 1) / y, ERANGE);