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-rw-r--r--src/math/e_acoshf.c45
1 files changed, 0 insertions, 45 deletions
diff --git a/src/math/e_acoshf.c b/src/math/e_acoshf.c
deleted file mode 100644
index b7f1df69..00000000
--- a/src/math/e_acoshf.c
+++ /dev/null
@@ -1,45 +0,0 @@
-/* e_acoshf.c -- float version of e_acosh.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"
-
-static const float
-one = 1.0,
-ln2 = 6.9314718246e-01; /* 0x3f317218 */
-
-float
-acoshf(float x)
-{
- float t;
- int32_t hx;
- GET_FLOAT_WORD(hx,x);
- if(hx<0x3f800000) { /* x < 1 */
- return (x-x)/(x-x);
- } else if(hx >=0x4d800000) { /* x > 2**28 */
- if(hx >=0x7f800000) { /* x is inf of NaN */
- return x+x;
- } else
- return logf(x)+ln2; /* acosh(huge)=log(2x) */
- } else if (hx==0x3f800000) {
- return 0.0; /* acosh(1) = 0 */
- } else if (hx > 0x40000000) { /* 2**28 > x > 2 */
- t=x*x;
- return logf((float)2.0*x-one/(x+sqrtf(t-one)));
- } else { /* 1<x<2 */
- t = x-one;
- return log1pf(t+sqrtf((float)2.0*t+t*t));
- }
-}