summaryrefslogtreecommitdiffstats
path: root/libm/src/e_hypotf.c
diff options
context:
space:
mode:
Diffstat (limited to 'libm/src/e_hypotf.c')
-rw-r--r--libm/src/e_hypotf.c83
1 files changed, 0 insertions, 83 deletions
diff --git a/libm/src/e_hypotf.c b/libm/src/e_hypotf.c
deleted file mode 100644
index 354075a..0000000
--- a/libm/src/e_hypotf.c
+++ /dev/null
@@ -1,83 +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.
- * ====================================================
- */
-
-#ifndef lint
-static char rcsid[] = "$FreeBSD: src/lib/msun/src/e_hypotf.c,v 1.9 2002/05/28 18:15:03 alfred Exp $";
-#endif
-
-#include "math.h"
-#include "math_private.h"
-
-float
-__ieee754_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 = __ieee754_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 = __ieee754_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;
-}