X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fmath%2Fef_acos.c;fp=src%2Fmath%2Fef_acos.c;h=0000000000000000000000000000000000000000;hp=f73f97de75a1265ca2b43df686a3edb46616e1c9;hb=0686a7b8aec524d81bda4c572549a3a068ce0eed;hpb=6aa451ce81bfdfe679e3f9902043a5f0d235c745

diff --git a/src/math/ef_acos.c b/src/math/ef_acos.c
deleted file mode 100644
index f73f97de..00000000
--- a/src/math/ef_acos.c
+++ /dev/null
@@ -1,84 +0,0 @@
-/* ef_acos.c -- float version of e_acos.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 
-#else
-static float 
-#endif
-one =  1.0000000000e+00, /* 0x3F800000 */
-pi =  3.1415925026e+00, /* 0x40490fda */
-pio2_hi =  1.5707962513e+00, /* 0x3fc90fda */
-pio2_lo =  7.5497894159e-08, /* 0x33a22168 */
-pS0 =  1.6666667163e-01, /* 0x3e2aaaab */
-pS1 = -3.2556581497e-01, /* 0xbea6b090 */
-pS2 =  2.0121252537e-01, /* 0x3e4e0aa8 */
-pS3 = -4.0055535734e-02, /* 0xbd241146 */
-pS4 =  7.9153501429e-04, /* 0x3a4f7f04 */
-pS5 =  3.4793309169e-05, /* 0x3811ef08 */
-qS1 = -2.4033949375e+00, /* 0xc019d139 */
-qS2 =  2.0209457874e+00, /* 0x4001572d */
-qS3 = -6.8828397989e-01, /* 0xbf303361 */
-qS4 =  7.7038154006e-02; /* 0x3d9dc62e */
-
-#ifdef __STDC__
-	float __ieee754_acosf(float x)
-#else
-	float __ieee754_acosf(x)
-	float x;
-#endif
-{
-	float z,p,q,r,w,s,c,df;
-	__int32_t hx,ix;
-	GET_FLOAT_WORD(hx,x);
-	ix = hx&0x7fffffff;
-	if(ix==0x3f800000) {		/* |x|==1 */
-	    if(hx>0) return 0.0;	/* acos(1) = 0  */
-	    else return pi+(float)2.0*pio2_lo;	/* acos(-1)= pi */
-	} else if(ix>0x3f800000) {	/* |x| >= 1 */
-	    return (x-x)/(x-x);		/* acos(|x|>1) is NaN */
-	}
-	if(ix<0x3f000000) {	/* |x| < 0.5 */
-	    if(ix<=0x23000000) return pio2_hi+pio2_lo;/*if|x|<2**-57*/
-	    z = x*x;
-	    p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5)))));
-	    q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4)));
-	    r = p/q;
-	    return pio2_hi - (x - (pio2_lo-x*r));
-	} else  if (hx<0) {		/* x < -0.5 */
-	    z = (one+x)*(float)0.5;
-	    p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5)))));
-	    q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4)));
-	    s = __ieee754_sqrtf(z);
-	    r = p/q;
-	    w = r*s-pio2_lo;
-	    return pi - (float)2.0*(s+w);
-	} else {			/* x > 0.5 */
-	    __int32_t idf;
-	    z = (one-x)*(float)0.5;
-	    s = __ieee754_sqrtf(z);
-	    df = s;
-	    GET_FLOAT_WORD(idf,df);
-	    SET_FLOAT_WORD(df,idf&0xfffff000);
-	    c  = (z-df*df)/(s+df);
-	    p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5)))));
-	    q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4)));
-	    r = p/q;
-	    w = r*s+c;
-	    return (float)2.0*(df+w);
-	}
-}