Enable full fmod implementation

esp8266/Arduino#612

Author: igrr

newlib/libm/math/ef_fmod.c

@@ -8,7 +8,7 @@
  *
  * Developed at SunPro, a Sun Microsystems, Inc. business.
  * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice 
+ * software is freely granted, provided that this notice
  * is preserved.
  * ====================================================
  */
@@ -18,7 +18,7 @@
 /* __ieee754_remainderf is provided by libgcc and presumably is faster
    then original implementation */
 
-#if 1
+#if 0
 
 extern float __ieee754_remainderf(float x, float y);
 
@@ -55,7 +55,7 @@ extern float __ieee754_remainderf(float x, float y);
 
 /* original version */
 
-/* 
+/*
  * __ieee754_fmodf(x,y)
  * Return x mod y in exact arithmetic
  * Method: shift and subtract
@@ -104,13 +104,13 @@ static float one = 1.0, Zero[] = {0.0, -0.0,};
 	} else iy = (hy>>23)-127;
 
     /* set up {hx,lx}, {hy,ly} and align y to x */
-	if(ix >= -126) 
+	if(ix >= -126)
 	    hx = 0x00800000|(0x007fffff&hx);
 	else {		/* subnormal x, shift x to normal */
 	    n = -126-ix;
 	    hx = hx<<n;
 	}
-	if(iy >= -126) 
+	if(iy >= -126)
 	    hy = 0x00800000|(0x007fffff&hy);
 	else {		/* subnormal y, shift y to normal */
 	    n = -126-iy;
@@ -133,7 +133,7 @@ static float one = 1.0, Zero[] = {0.0, -0.0,};
 
     /* convert back to floating value and restore the sign */
 	if(hx==0) 			/* return sign(x)*0 */
-	    return Zero[(__uint32_t)sx>>31];	
+	    return Zero[(__uint32_t)sx>>31];
 	while(hx<0x00800000) {		/* normalize x */
 	    hx = hx+hx;
 	    iy -= 1;
@@ -153,4 +153,3 @@ static float one = 1.0, Zero[] = {0.0, -0.0,};
 }
 
 #endif
-