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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libm/] [common/] [sf_log2.c] - Blame information for rev 207

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Line No. Rev Author Line
1 207 jeremybenn
/* sf_log2.c -- float version of s_log2.c.
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 * Modification of sf_exp10.c by Yaakov Selkowitz 2009.
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 */
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/*
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 * ====================================================
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 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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 *
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 * Developed at SunPro, a Sun Microsystems, Inc. business.
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 * Permission to use, copy, modify, and distribute this
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 * software is freely granted, provided that this notice
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 * is preserved.
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 * ====================================================
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 */
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/*
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 * wrapper log2f(x)
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 */
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#include "fdlibm.h"
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#include <errno.h>
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#include <math.h>
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#undef log2
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#undef log2f
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#ifdef __STDC__
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        float log2f(float x)            /* wrapper log2f */
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#else
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        float log2f(x)                  /* wrapper log2f */
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        float x;
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#endif
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{
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  return (logf(x) / (float) M_LOG2_E);
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}
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#ifdef _DOUBLE_IS_32BITS
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#ifdef __STDC__
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        double log2(double x)
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#else
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        double log2(x)
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        double x;
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#endif
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{
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        return (double) log2f((float) x);
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}
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#endif /* defined(_DOUBLE_IS_32BITS) */

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