forked from KolibriOS/kolibrios
cde4fa851d
- Formatted by clang-format (WebKit-style). - Removed unnecessary errno linux. - Added KOS error codes. - String functions have been replaced with more optimal ones for x86. - Changed wrappers for 70 sysfunction. git-svn-id: svn://kolibrios.org@9765 a494cfbc-eb01-0410-851d-a64ba20cac60
16 lines
329 B
C
16 lines
329 B
C
/* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
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#include <math.h>
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double tanh(double x)
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{
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if (x > 50)
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return 1;
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else if (x < -50)
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return -1;
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else {
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const double ebig = exp(x);
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const double esmall = 1.0 / ebig;
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return (ebig - esmall) / (ebig + esmall);
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}
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}
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