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-rw-r--r--src/math/s_cbrtf.c67
1 files changed, 0 insertions, 67 deletions
diff --git a/src/math/s_cbrtf.c b/src/math/s_cbrtf.c
deleted file mode 100644
index e7b46de7..00000000
--- a/src/math/s_cbrtf.c
+++ /dev/null
@@ -1,67 +0,0 @@
-/* s_cbrtf.c -- float version of s_cbrt.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"
-
-/* cbrtf(x)
- * Return cube root of x
- */
-static const unsigned
- B1 = 709958130, /* B1 = (84+2/3-0.03306235651)*2**23 */
- B2 = 642849266; /* B2 = (76+2/3-0.03306235651)*2**23 */
-
-static const float
-C = 5.4285717010e-01, /* 19/35 = 0x3f0af8b0 */
-D = -7.0530611277e-01, /* -864/1225 = 0xbf348ef1 */
-E = 1.4142856598e+00, /* 99/70 = 0x3fb50750 */
-F = 1.6071428061e+00, /* 45/28 = 0x3fcdb6db */
-G = 3.5714286566e-01; /* 5/14 = 0x3eb6db6e */
-
-float
-cbrtf(float x)
-{
- float r,s,t;
- int32_t hx;
- uint32_t sign;
- uint32_t high;
-
- GET_FLOAT_WORD(hx,x);
- sign=hx&0x80000000; /* sign= sign(x) */
- hx ^=sign;
- if(hx>=0x7f800000) return(x+x); /* cbrt(NaN,INF) is itself */
- if(hx==0)
- return(x); /* cbrt(0) is itself */
-
- SET_FLOAT_WORD(x,hx); /* x <- |x| */
- /* rough cbrt to 5 bits */
- if(hx<0x00800000) /* subnormal number */
- {SET_FLOAT_WORD(t,0x4b800000); /* set t= 2**24 */
- t*=x; GET_FLOAT_WORD(high,t); SET_FLOAT_WORD(t,high/3+B2);
- }
- else
- SET_FLOAT_WORD(t,hx/3+B1);
-
-
- /* new cbrt to 23 bits */
- r=t*t/x;
- s=C+r*t;
- t*=G+F/(s+E+D/s);
-
- /* retore the sign bit */
- GET_FLOAT_WORD(high,t);
- SET_FLOAT_WORD(t,high|sign);
- return(t);
-}