math cleanup: use 1.0f instead of 1.0F

src/math/hypotf.c

@@ -40,7 +40,7 @@ float hypotf(float x, float y)
 	if (ha > 0x58800000) {    /* a > 2**50 */
 		if(ha >= 0x7f800000) {  /* Inf or NaN */
 			/* Use original arg order iff result is NaN; quieten sNaNs. */
-			w = fabsf(x+0.0F) - fabsf(y+0.0F);
+			w = fabsf(x+0.0f) - fabsf(y+0.0f);
 			if (ha == 0x7f800000) w = a;
 			if (hb == 0x7f800000) w = b;
 			return w;

src/math/pow.c

@@ -112,7 +112,7 @@ double pow(double x, double y)
 	/* y != zero: result is NaN if either arg is NaN */
 	if (ix > 0x7ff00000 || (ix == 0x7ff00000 && lx != 0) ||
 	    iy > 0x7ff00000 || (iy == 0x7ff00000 && ly != 0))
-		return (x+0.0)+(y+0.0); // FIXME: x+y ?
+		return (x+0.0) + (y+0.0);
 
 	/* determine if y is an odd int when x < 0
 	 * yisint = 0       ... y is not an integer

src/math/powf.c

@@ -70,7 +70,7 @@ float powf(float x, float y)
 
 	/* y != zero: result is NaN if either arg is NaN */
 	if (ix > 0x7f800000 || iy > 0x7f800000)
-		return (x+0.0F) + (y+0.0F);
+		return (x+0.0f) + (y+0.0f);
 
 	/* determine if y is an odd int when x < 0
 	 * yisint = 0       ... y is not an integer

src/math/truncf.c

@@ -20,7 +20,7 @@
 
 #include "libm.h"
 
-static const float huge = 1.0e30F;
+static const float huge = 1.0e30f;
 
 float truncf(float x)
 {
@@ -32,14 +32,14 @@ float truncf(float x)
 	if (j0 < 23) {
 		if (j0 < 0) {  /* |x|<1, return 0*sign(x) */
 			/* raise inexact if x != 0 */
-			if (huge+x > 0.0F)
+			if (huge+x > 0.0f)
 				i0 &= 0x80000000;
 		} else {
 			i = 0x007fffff>>j0;
 			if ((i0&i) == 0)
 				return x; /* x is integral */
 			/* raise inexact */
-			if (huge+x > 0.0F)
+			if (huge+x > 0.0f)
 				i0 &= ~i;
 		}
 	} else {