X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fmath%2Fef_sqrt.c;fp=src%2Fmath%2Fef_sqrt.c;h=0000000000000000000000000000000000000000;hp=80e7f360e85147e6786ea24f0e63db498ae46945;hb=0686a7b8aec524d81bda4c572549a3a068ce0eed;hpb=6aa451ce81bfdfe679e3f9902043a5f0d235c745

diff --git a/src/math/ef_sqrt.c b/src/math/ef_sqrt.c
deleted file mode 100644
index 80e7f360..00000000
--- a/src/math/ef_sqrt.c
+++ /dev/null
@@ -1,89 +0,0 @@
-/* ef_sqrtf.c -- float version of e_sqrt.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__
-static	const float	one	= 1.0, tiny=1.0e-30;
-#else
-static	float	one	= 1.0, tiny=1.0e-30;
-#endif
-
-#ifdef __STDC__
-	float __ieee754_sqrtf(float x)
-#else
-	float __ieee754_sqrtf(x)
-	float x;
-#endif
-{
-	float z;
-	__uint32_t r,hx;
-	__int32_t ix,s,q,m,t,i;
-
-	GET_FLOAT_WORD(ix,x);
-	hx = ix&0x7fffffff;
-
-    /* take care of Inf and NaN */
-	if(!FLT_UWORD_IS_FINITE(hx))
-	    return x*x+x;		/* sqrt(NaN)=NaN, sqrt(+inf)=+inf
-					   sqrt(-inf)=sNaN */
-    /* take care of zero and -ves */
-	if(FLT_UWORD_IS_ZERO(hx)) return x;/* sqrt(+-0) = +-0 */
-	if(ix<0) return (x-x)/(x-x);		/* sqrt(-ve) = sNaN */
-
-    /* normalize x */
-	m = (ix>>23);
-	if(FLT_UWORD_IS_SUBNORMAL(hx)) {		/* subnormal x */
-	    for(i=0;(ix&0x00800000L)==0;i++) ix<<=1;
-	    m -= i-1;
-	}
-	m -= 127;	/* unbias exponent */
-	ix = (ix&0x007fffffL)|0x00800000L;
-	if(m&1)	/* odd m, double x to make it even */
-	    ix += ix;
-	m >>= 1;	/* m = [m/2] */
-
-    /* generate sqrt(x) bit by bit */
-	ix += ix;
-	q = s = 0;		/* q = sqrt(x) */
-	r = 0x01000000L;		/* r = moving bit from right to left */
-
-	while(r!=0) {
-	    t = s+r; 
-	    if(t<=ix) { 
-		s    = t+r; 
-		ix  -= t; 
-		q   += r; 
-	    } 
-	    ix += ix;
-	    r>>=1;
-	}
-
-    /* use floating add to find out rounding direction */
-	if(ix!=0) {
-	    z = one-tiny; /* trigger inexact flag */
-	    if (z>=one) {
-	        z = one+tiny;
-		if (z>one)
-		    q += 2;
-		else
-		    q += (q&1);
-	    }
-	}
-	ix = (q>>1)+0x3f000000L;
-	ix += (m <<23);
-	SET_FLOAT_WORD(z,ix);
-	return z;
-}