GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libm/src/e_sinhf.c Lines: 0 16 0.0 %
Date: 2017-11-13 Branches: 0 16 0.0 %

Line Branch Exec Source
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/* e_sinhf.c -- float version of e_sinh.c.
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 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
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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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#include "math.h"
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#include "math_private.h"
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static const float one = 1.0, shuge = 1.0e37;
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float
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sinhf(float x)
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{
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	float t,w,h;
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	int32_t ix,jx;
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	GET_FLOAT_WORD(jx,x);
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	ix = jx&0x7fffffff;
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    /* x is INF or NaN */
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	if(ix>=0x7f800000) return x+x;
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	h = 0.5;
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	if (jx<0) h = -h;
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    /* |x| in [0,22], return sign(x)*0.5*(E+E/(E+1))) */
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	if (ix < 0x41b00000) {		/* |x|<22 */
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	    if (ix<0x31800000) 		/* |x|<2**-28 */
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		if(shuge+x>one) return x;/* sinh(tiny) = tiny with inexact */
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	    t = expm1f(fabsf(x));
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	    if(ix<0x3f800000) return h*((float)2.0*t-t*t/(t+one));
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	    return h*(t+t/(t+one));
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	}
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    /* |x| in [22, log(maxdouble)] return 0.5*exp(|x|) */
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	if (ix < 0x42b17180)  return h*expf(fabsf(x));
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    /* |x| in [log(maxdouble), overflowthresold] */
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	if (ix<=0x42b2d4fc) {
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	    w = expf((float)0.5*fabsf(x));
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	    t = h*w;
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	    return t*w;
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	}
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    /* |x| > overflowthresold, sinh(x) overflow */
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	return x*shuge;
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}
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DEF_STD(sinhf);