X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fmath%2Facosf.c;h=d875f3ef50c3e7a00f1cc09ca0de4b7675239e6f;hb=30df206cb0c66848142898115d301a0d80333d0f;hp=dd3bba29e31cf212c73c7a175d3bc0ca5b1679ee;hpb=b69f695acedd4ce2798ef9ea28d834ceccc789bd;p=musl

diff --git a/src/math/acosf.c b/src/math/acosf.c
index dd3bba29..d875f3ef 100644
--- a/src/math/acosf.c
+++ b/src/math/acosf.c
@@ -16,10 +16,9 @@
 #include "libm.h"
 
 static const float
-one = 1.0000000000e+00, /* 0x3F800000 */
-pi  = 3.1415925026e+00, /* 0x40490fda */
+pi      = 3.1415925026e+00, /* 0x40490fda */
 pio2_hi = 1.5707962513e+00; /* 0x3fc90fda */
-static volatile float
+static const volatile float
 pio2_lo = 7.5497894159e-08; /* 0x33a22168 */
 static const float
 pS0 =  1.6666586697e-01,
@@ -36,8 +35,8 @@ float acosf(float x)
 	ix = hx & 0x7fffffff;
 	if (ix >= 0x3f800000) {  /* |x| >= 1 */
 		if (ix == 0x3f800000) {  /* |x| == 1 */
-			if(hx>0) return 0.0;  /* acos(1) = 0 */
-			return pi + (float)2.0*pio2_lo;  /* acos(-1)= pi */
+			if (hx > 0) return 0.0f;  /* acos(1) = 0 */
+			return pi + 2.0f*pio2_lo;  /* acos(-1)= pi */
 		}
 		return (x-x)/(x-x);  /* acos(|x|>1) is NaN */
 	}
@@ -46,30 +45,30 @@ float acosf(float x)
 			return pio2_hi + pio2_lo;
 		z = x*x;
 		p = z*(pS0+z*(pS1+z*pS2));
-		q = one+z*qS1;
+		q = 1.0f+z*qS1;
 		r = p/q;
 		return pio2_hi - (x - (pio2_lo-x*r));
 	} else if (hx < 0) {     /* x < -0.5 */
-		z = (one+x)*(float)0.5;
+		z = (1.0f+x)*0.5f;
 		p = z*(pS0+z*(pS1+z*pS2));
-		q = one+z*qS1;
+		q = 1.0f+z*qS1;
 		s = sqrtf(z);
 		r = p/q;
 		w = r*s-pio2_lo;
-		return pi - (float)2.0*(s+w);
+		return pi - 2.0f*(s+w);
 	} else {                 /* x > 0.5 */
 		int32_t idf;
 
-		z = (one-x)*(float)0.5;
+		z = (1.0f-x)*0.5f;
 		s = sqrtf(z);
 		df = s;
 		GET_FLOAT_WORD(idf,df);
 		SET_FLOAT_WORD(df,idf&0xfffff000);
 		c  = (z-df*df)/(s+df);
 		p = z*(pS0+z*(pS1+z*pS2));
-		q = one+z*qS1;
+		q = 1.0f+z*qS1;
 		r = p/q;
 		w = r*s+c;
-		return (float)2.0*(df+w);
+		return 2.0f*(df+w);
 	}
 }