X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fmath%2Flogf.c;h=c7f7dbe6fee1dab14c9a845cfc4dcb9738a1257a;hb=c6383b7b10303457306932584fc23f24b5153a81;hp=285ee6151eaf9df68b961ff078a55bf63e2aad28;hpb=b69f695acedd4ce2798ef9ea28d834ceccc789bd;p=musl

diff --git a/src/math/logf.c b/src/math/logf.c
index 285ee615..c7f7dbe6 100644
--- a/src/math/logf.c
+++ b/src/math/logf.c
@@ -25,8 +25,6 @@ Lg2 = 0xccce13.0p-25, /* 0.40000972152 */
 Lg3 = 0x91e9ee.0p-25, /* 0.28498786688 */
 Lg4 = 0xf89e26.0p-26; /* 0.24279078841 */
 
-static const float zero = 0.0;
-
 float logf(float x)
 {
 	float hfsq,f,s,z,R,w,t1,t2,dk;
@@ -37,9 +35,9 @@ float logf(float x)
 	k = 0;
 	if (ix < 0x00800000) {  /* x < 2**-126  */
 		if ((ix & 0x7fffffff) == 0)
-			return -two25/zero;  /* log(+-0)=-inf */
+			return -two25/0.0f;  /* log(+-0)=-inf */
 		if (ix < 0)
-			return (x-x)/zero;   /* log(-#) = NaN */
+			return (x-x)/0.0f;   /* log(-#) = NaN */
 		/* subnormal number, scale up x */
 		k -= 25;
 		x *= two25;
@@ -52,21 +50,21 @@ float logf(float x)
 	i = (ix + (0x95f64<<3)) & 0x800000;
 	SET_FLOAT_WORD(x, ix|(i^0x3f800000));  /* normalize x or x/2 */
 	k += i>>23;
-	f = x - (float)1.0;
+	f = x - 1.0f;
 	if ((0x007fffff & (0x8000 + ix)) < 0xc000) {  /* -2**-9 <= f < 2**-9 */
-		if (f == zero) {
+		if (f == 0.0f) {
 			if (k == 0)
-				return zero;
+				return 0.0f;
 			dk = (float)k;
 			return dk*ln2_hi + dk*ln2_lo;
 		}
-		R = f*f*((float)0.5 - (float)0.33333333333333333*f);
+		R = f*f*(0.5f - 0.33333333333333333f*f);
 		if (k == 0)
 			return f-R;
 		dk = (float)k;
 		return dk*ln2_hi - ((R-dk*ln2_lo)-f);
 	}
-	s = f/((float)2.0+f);
+	s = f/(2.0f + f);
 	dk = (float)k;
 	z = s*s;
 	i = ix-(0x6147a<<3);
@@ -77,7 +75,7 @@ float logf(float x)
 	i |= j;
 	R = t2 + t1;
 	if (i > 0) {
-		hfsq = (float)0.5*f*f;
+		hfsq = 0.5f * f * f;
 		if (k == 0)
 			return f - (hfsq-s*(hfsq+R));
 		return dk*ln2_hi - ((hfsq-(s*(hfsq+R)+dk*ln2_lo))-f);