Format floating routines.

1 files changed, 91 insertions, 66 deletions

diff --git a/sysdeps/ieee754/dbl-64/e_hypot.c b/sysdeps/ieee754/dbl-64/e_hypot.c
index 2dd681cf1a..9f4321efe1 100644
--- a/sysdeps/ieee754/dbl-64/e_hypot.c
+++ b/sysdeps/ieee754/dbl-64/e_hypot.c
@@ -46,76 +46,101 @@
 #include <math_private.h>
 
 double
-__ieee754_hypot(double x, double y)
+__ieee754_hypot (double x, double y)
 {
-	double a,b,t1,t2,y1,y2,w;
-	int32_t j,k,ha,hb;
+  double a, b, t1, t2, y1, y2, w;
+  int32_t j, k, ha, hb;
 
-	GET_HIGH_WORD(ha,x);
-	ha &= 0x7fffffff;
-	GET_HIGH_WORD(hb,y);
-	hb &= 0x7fffffff;
-	if(hb > ha) {a=y;b=x;j=ha; ha=hb;hb=j;} else {a=x;b=y;}
-	SET_HIGH_WORD(a,ha);	/* a <- |a| */
-	SET_HIGH_WORD(b,hb);	/* b <- |b| */
-	if((ha-hb)>0x3c00000) {return a+b;} /* x/y > 2**60 */
-	k=0;
-	if(__builtin_expect(ha > 0x5f300000, 0)) {	/* a>2**500 */
-	   if(ha >= 0x7ff00000) {	/* Inf or NaN */
-	       u_int32_t low;
-	       w = a+b;			/* for sNaN */
-	       GET_LOW_WORD(low,a);
-	       if(((ha&0xfffff)|low)==0) w = a;
-	       GET_LOW_WORD(low,b);
-	       if(((hb^0x7ff00000)|low)==0) w = b;
-	       return w;
-	   }
-	   /* scale a and b by 2**-600 */
-	   ha -= 0x25800000; hb -= 0x25800000;	k += 600;
-	   SET_HIGH_WORD(a,ha);
-	   SET_HIGH_WORD(b,hb);
+  GET_HIGH_WORD (ha, x);
+  ha &= 0x7fffffff;
+  GET_HIGH_WORD (hb, y);
+  hb &= 0x7fffffff;
+  if (hb > ha)
+    {
+      a = y; b = x; j = ha; ha = hb; hb = j;
+    }
+  else
+    {
+      a = x; b = y;
+    }
+  SET_HIGH_WORD (a, ha);        /* a <- |a| */
+  SET_HIGH_WORD (b, hb);        /* b <- |b| */
+  if ((ha - hb) > 0x3c00000)
+    {
+      return a + b;
+    }                                       /* x/y > 2**60 */
+  k = 0;
+  if (__builtin_expect (ha > 0x5f300000, 0))            /* a>2**500 */
+    {
+      if (ha >= 0x7ff00000)             /* Inf or NaN */
+	{
+	  u_int32_t low;
+	  w = a + b;                    /* for sNaN */
+	  GET_LOW_WORD (low, a);
+	  if (((ha & 0xfffff) | low) == 0)
+	    w = a;
+	  GET_LOW_WORD (low, b);
+	  if (((hb ^ 0x7ff00000) | low) == 0)
+	    w = b;
+	  return w;
 	}
-	if(__builtin_expect(hb < 0x20b00000, 0)) {	/* b < 2**-500 */
-	    if(hb <= 0x000fffff) {	/* subnormal b or 0 */
-		u_int32_t low;
-		GET_LOW_WORD(low,b);
-		if((hb|low)==0) return a;
-		t1=0;
-		SET_HIGH_WORD(t1,0x7fd00000);	/* t1=2^1022 */
-		b *= t1;
-		a *= t1;
-		k -= 1022;
-	    } else {		/* scale a and b by 2^600 */
-		ha += 0x25800000;	/* a *= 2^600 */
-		hb += 0x25800000;	/* b *= 2^600 */
-		k -= 600;
-		SET_HIGH_WORD(a,ha);
-		SET_HIGH_WORD(b,hb);
-	    }
+      /* scale a and b by 2**-600 */
+      ha -= 0x25800000; hb -= 0x25800000;  k += 600;
+      SET_HIGH_WORD (a, ha);
+      SET_HIGH_WORD (b, hb);
+    }
+  if (__builtin_expect (hb < 0x20b00000, 0))            /* b < 2**-500 */
+    {
+      if (hb <= 0x000fffff)             /* subnormal b or 0 */
+	{
+	  u_int32_t low;
+	  GET_LOW_WORD (low, b);
+	  if ((hb | low) == 0)
+	    return a;
+	  t1 = 0;
+	  SET_HIGH_WORD (t1, 0x7fd00000);       /* t1=2^1022 */
+	  b *= t1;
+	  a *= t1;
+	  k -= 1022;
 	}
-    /* medium size a and b */
-	w = a-b;
-	if (w>b) {
-	    t1 = 0;
-	    SET_HIGH_WORD(t1,ha);
-	    t2 = a-t1;
-	    w  = __ieee754_sqrt(t1*t1-(b*(-b)-t2*(a+t1)));
-	} else {
-	    a  = a+a;
-	    y1 = 0;
-	    SET_HIGH_WORD(y1,hb);
-	    y2 = b - y1;
-	    t1 = 0;
-	    SET_HIGH_WORD(t1,ha+0x00100000);
-	    t2 = a - t1;
-	    w  = __ieee754_sqrt(t1*y1-(w*(-w)-(t1*y2+t2*b)));
+      else                      /* scale a and b by 2^600 */
+	{
+	  ha += 0x25800000;             /* a *= 2^600 */
+	  hb += 0x25800000;             /* b *= 2^600 */
+	  k -= 600;
+	  SET_HIGH_WORD (a, ha);
+	  SET_HIGH_WORD (b, hb);
 	}
-	if(k!=0) {
-	    u_int32_t high;
-	    t1 = 1.0;
-	    GET_HIGH_WORD(high,t1);
-	    SET_HIGH_WORD(t1,high+(k<<20));
-	    return t1*w;
-	} else return w;
+    }
+  /* medium size a and b */
+  w = a - b;
+  if (w > b)
+    {
+      t1 = 0;
+      SET_HIGH_WORD (t1, ha);
+      t2 = a - t1;
+      w = __ieee754_sqrt (t1 * t1 - (b * (-b) - t2 * (a + t1)));
+    }
+  else
+    {
+      a = a + a;
+      y1 = 0;
+      SET_HIGH_WORD (y1, hb);
+      y2 = b - y1;
+      t1 = 0;
+      SET_HIGH_WORD (t1, ha + 0x00100000);
+      t2 = a - t1;
+      w = __ieee754_sqrt (t1 * y1 - (w * (-w) - (t1 * y2 + t2 * b)));
+    }
+  if (k != 0)
+    {
+      u_int32_t high;
+      t1 = 1.0;
+      GET_HIGH_WORD (high, t1);
+      SET_HIGH_WORD (t1, high + (k << 20));
+      return t1 * w;
+    }
+  else
+    return w;
 }
 strong_alias (__ieee754_hypot, __hypot_finite)