lib: Starting thinning out the dependency on math.h by using compiler builtins
where available.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@144785 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/divsc3.c b/lib/divsc3.c
index 50ca81e..88e2e09 100644
--- a/lib/divsc3.c
+++ b/lib/divsc3.c
@@ -13,6 +13,7 @@
*/
#include "int_lib.h"
+#include "int_math.h"
#include <math.h>
/* Returns: the quotient of (a + ib) / (c + id) */
@@ -22,7 +23,7 @@
{
int __ilogbw = 0;
float __logbw = logbf(fmaxf(fabsf(__c), fabsf(__d)));
- if (isfinite(__logbw))
+ if (crt_isfinite(__logbw))
{
__ilogbw = (int)__logbw;
__c = scalbnf(__c, -__ilogbw);
@@ -32,24 +33,26 @@
float _Complex z;
__real__ z = scalbnf((__a * __c + __b * __d) / __denom, -__ilogbw);
__imag__ z = scalbnf((__b * __c - __a * __d) / __denom, -__ilogbw);
- if (isnan(__real__ z) && isnan(__imag__ z))
+ if (crt_isnan(__real__ z) && crt_isnan(__imag__ z))
{
- if ((__denom == 0) && (!isnan(__a) || !isnan(__b)))
+ if ((__denom == 0) && (!crt_isnan(__a) || !crt_isnan(__b)))
{
__real__ z = copysignf(INFINITY, __c) * __a;
__imag__ z = copysignf(INFINITY, __c) * __b;
}
- else if ((isinf(__a) || isinf(__b)) && isfinite(__c) && isfinite(__d))
+ else if ((crt_isinf(__a) || crt_isinf(__b)) &&
+ crt_isfinite(__c) && crt_isfinite(__d))
{
- __a = copysignf(isinf(__a) ? 1 : 0, __a);
- __b = copysignf(isinf(__b) ? 1 : 0, __b);
+ __a = copysignf(crt_isinf(__a) ? 1 : 0, __a);
+ __b = copysignf(crt_isinf(__b) ? 1 : 0, __b);
__real__ z = INFINITY * (__a * __c + __b * __d);
__imag__ z = INFINITY * (__b * __c - __a * __d);
}
- else if (isinf(__logbw) && __logbw > 0 && isfinite(__a) && isfinite(__b))
+ else if (crt_isinf(__logbw) && __logbw > 0 &&
+ crt_isfinite(__a) && crt_isfinite(__b))
{
- __c = copysignf(isinf(__c) ? 1 : 0, __c);
- __d = copysignf(isinf(__d) ? 1 : 0, __d);
+ __c = copysignf(crt_isinf(__c) ? 1 : 0, __c);
+ __d = copysignf(crt_isinf(__d) ? 1 : 0, __d);
__real__ z = 0 * (__a * __c + __b * __d);
__imag__ z = 0 * (__b * __c - __a * __d);
}