1 files changed, 0 insertions, 77 deletions
diff --git a/src/math/s_cbrt.c b/src/math/s_cbrt.c
deleted file mode 100644
index 8adcb191..00000000
--- a/src/math/s_cbrt.c
+++ /dev/null
@@ -1,77 +0,0 @@
-/* @(#)s_cbrt.c 5.1 93/09/24 */
-/*
- * ====================================================
- * 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"
-
-/* cbrt(x)
- * Return cube root of x
- */
-static const uint32_t
-        B1 = 715094163, /* B1 = (682-0.03306235651)*2**20 */
-        B2 = 696219795; /* B2 = (664-0.03306235651)*2**20 */
-
-static const double
-C =  5.42857142857142815906e-01, /* 19/35     = 0x3FE15F15, 0xF15F15F1 */
-D = -7.05306122448979611050e-01, /* -864/1225 = 0xBFE691DE, 0x2532C834 */
-E =  1.41428571428571436819e+00, /* 99/70     = 0x3FF6A0EA, 0x0EA0EA0F */
-F =  1.60714285714285720630e+00, /* 45/28     = 0x3FF9B6DB, 0x6DB6DB6E */
-G =  3.57142857142857150787e-01; /* 5/14      = 0x3FD6DB6D, 0xB6DB6DB7 */
-
-double
-cbrt(double x)
-{
-        int32_t hx;
-        double r,s,t=0.0,w;
-        uint32_t sign;
-        uint32_t high,low;
-
-        GET_HIGH_WORD(hx,x);
-        sign=hx&0x80000000;             /* sign= sign(x) */
-        hx  ^=sign;
-        if(hx>=0x7ff00000) return(x+x); /* cbrt(NaN,INF) is itself */
-        GET_LOW_WORD(low,x);
-        if((hx|low)==0)
-            return(x);          /* cbrt(0) is itself */
-
-        SET_HIGH_WORD(x,hx);    /* x <- |x| */
-    /* rough cbrt to 5 bits */
-        if(hx<0x00100000)               /* subnormal number */
-          {SET_HIGH_WORD(t,0x43500000); /* set t= 2**54 */
-           t*=x; GET_HIGH_WORD(high,t); SET_HIGH_WORD(t,high/3+B2);
-          }
-        else
-          SET_HIGH_WORD(t,hx/3+B1);
-
-
-    /* new cbrt to 23 bits, may be implemented in single precision */
-        r=t*t/x;
-        s=C+r*t;
-        t*=G+F/(s+E+D/s);
-
-    /* chopped to 20 bits and make it larger than cbrt(x) */
-        GET_HIGH_WORD(high,t);
-        INSERT_WORDS(t,high+0x00000001,0);
-
-
-    /* one step newton iteration to 53 bits with error less than 0.667 ulps */
-        s=t*t;          /* t*t is exact */
-        r=x/s;
-        w=t+t;
-        r=(r-t)/(w+r);  /* r-s is exact */
-        t=t+t*r;
-
-    /* retore the sign bit */
-        GET_HIGH_WORD(high,t);
-        SET_HIGH_WORD(t,high|sign);
-        return(t);
-}