about summary refs log tree commit diff
path: root/src/math/e_hypotf.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/math/e_hypotf.c')
-rw-r--r--src/math/e_hypotf.c79
1 files changed, 0 insertions, 79 deletions
diff --git a/src/math/e_hypotf.c b/src/math/e_hypotf.c
deleted file mode 100644
index 13773554..00000000
--- a/src/math/e_hypotf.c
+++ /dev/null
@@ -1,79 +0,0 @@
-/* e_hypotf.c -- float version of e_hypot.c.
- * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
- */
-
-/*
- * ====================================================
- * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
- *
- * Developed at SunPro, a Sun Microsystems, Inc. business.
- * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice
- * is preserved.
- * ====================================================
- */
-
-#include <math.h>
-#include "math_private.h"
-
-float
-hypotf(float x, float y)
-{
-        float a=x,b=y,t1,t2,y1,y2,w;
-        int32_t j,k,ha,hb;
-
-        GET_FLOAT_WORD(ha,x);
-        ha &= 0x7fffffff;
-        GET_FLOAT_WORD(hb,y);
-        hb &= 0x7fffffff;
-        if(hb > ha) {a=y;b=x;j=ha; ha=hb;hb=j;} else {a=x;b=y;}
-        SET_FLOAT_WORD(a,ha);   /* a <- |a| */
-        SET_FLOAT_WORD(b,hb);   /* b <- |b| */
-        if((ha-hb)>0xf000000) {return a+b;} /* x/y > 2**30 */
-        k=0;
-        if(ha > 0x58800000) {   /* a>2**50 */
-           if(ha >= 0x7f800000) {       /* Inf or NaN */
-               w = a+b;                 /* for sNaN */
-               if(ha == 0x7f800000) w = a;
-               if(hb == 0x7f800000) w = b;
-               return w;
-           }
-           /* scale a and b by 2**-68 */
-           ha -= 0x22000000; hb -= 0x22000000;  k += 68;
-           SET_FLOAT_WORD(a,ha);
-           SET_FLOAT_WORD(b,hb);
-        }
-        if(hb < 0x26800000) {   /* b < 2**-50 */
-            if(hb <= 0x007fffff) {      /* subnormal b or 0 */
-                if(hb==0) return a;
-                SET_FLOAT_WORD(t1,0x7e800000);  /* t1=2^126 */
-                b *= t1;
-                a *= t1;
-                k -= 126;
-            } else {            /* scale a and b by 2^68 */
-                ha += 0x22000000;       /* a *= 2^68 */
-                hb += 0x22000000;       /* b *= 2^68 */
-                k -= 68;
-                SET_FLOAT_WORD(a,ha);
-                SET_FLOAT_WORD(b,hb);
-            }
-        }
-    /* medium size a and b */
-        w = a-b;
-        if (w>b) {
-            SET_FLOAT_WORD(t1,ha&0xfffff000);
-            t2 = a-t1;
-            w  = sqrtf(t1*t1-(b*(-b)-t2*(a+t1)));
-        } else {
-            a  = a+a;
-            SET_FLOAT_WORD(y1,hb&0xfffff000);
-            y2 = b - y1;
-            SET_FLOAT_WORD(t1,ha+0x00800000);
-            t2 = a - t1;
-            w  = sqrtf(t1*y1-(w*(-w)-(t1*y2+t2*b)));
-        }
-        if(k!=0) {
-            SET_FLOAT_WORD(t1,0x3f800000+(k<<23));
-            return t1*w;
-        } else return w;
-}