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17 lines
274 B
C
17 lines
274 B
C
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/* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
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#include <math.h>
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double sinh(double x)
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{
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if(x >= 0.0)
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{
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const double epos = exp(x);
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return (epos - 1.0/epos) / 2.0;
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}
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else
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{
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const double eneg = exp(-x);
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return (1.0/eneg - eneg) / 2.0;
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}
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}
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