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Diffstat (limited to 'newlib/libm/math/ef_hypot.c')
-rw-r--r-- | newlib/libm/math/ef_hypot.c | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/newlib/libm/math/ef_hypot.c b/newlib/libm/math/ef_hypot.c deleted file mode 100644 index a87fa48..0000000 --- a/newlib/libm/math/ef_hypot.c +++ /dev/null @@ -1,82 +0,0 @@ -/* ef_hypot.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 "fdlibm.h" - -#ifdef __STDC__ - float __ieee754_hypotf(float x, float y) -#else - float __ieee754_hypotf(x,y) - float x, y; -#endif -{ - float a=x,b=y,t1,t2,y1,y2,w; - __int32_t j,k,ha,hb; - - GET_FLOAT_WORD(ha,x); - ha &= 0x7fffffffL; - GET_FLOAT_WORD(hb,y); - hb &= 0x7fffffffL; - 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)>0xf000000L) {return a+b;} /* x/y > 2**30 */ - k=0; - if(ha > 0x58800000L) { /* a>2**50 */ - if(ha >= 0x7f800000L) { /* Inf or NaN */ - w = a+b; /* for sNaN */ - if(ha == 0x7f800000L) w = a; - if(hb == 0x7f800000L) w = b; - return w; - } - /* scale a and b by 2**-60 */ - ha -= 0x5d800000L; hb -= 0x5d800000L; k += 60; - SET_FLOAT_WORD(a,ha); - SET_FLOAT_WORD(b,hb); - } - if(hb < 0x26800000L) { /* b < 2**-50 */ - if(hb <= 0x007fffffL) { /* subnormal b or 0 */ - if(hb==0) return a; - SET_FLOAT_WORD(t1,0x3f000000L); /* t1=2^126 */ - b *= t1; - a *= t1; - k -= 126; - } else { /* scale a and b by 2^60 */ - ha += 0x5d800000; /* a *= 2^60 */ - hb += 0x5d800000; /* b *= 2^60 */ - k -= 60; - 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&0xfffff000L); - t2 = a-t1; - w = __ieee754_sqrtf(t1*t1-(b*(-b)-t2*(a+t1))); - } else { - a = a+a; - SET_FLOAT_WORD(y1,hb&0xfffff000L); - y2 = b - y1; - SET_FLOAT_WORD(t1,ha+0x00800000L); - t2 = a - t1; - w = __ieee754_sqrtf(t1*y1-(w*(-w)-(t1*y2+t2*b))); - } - if(k!=0) { - SET_FLOAT_WORD(t1,0x3f800000L+(k<<23)); - return t1*w; - } else return w; -} |