1: /* a simple pow10 implementation
3: Copyright (C) 1995,1998 Free Software Foundation, Inc.
5: This file is part of Gforth.
7: Gforth is free software; you can redistribute it and/or
8: modify it under the terms of the GNU General Public License
9: as published by the Free Software Foundation; either version 2
10: of the License, or (at your option) any later version.
12: This program is distributed in the hope that it will be useful,
13: but WITHOUT ANY WARRANTY; without even the implied warranty of
14: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: GNU General Public License for more details.
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18: along with this program; if not, write to the Free Software
19: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
21: #include <math.h>
23: #ifndef M_LN10
24: #define M_LN10 2.30258509299404568402
27: #if !defined(_ANSI_MATH_H) && !defined(exp)
28: /* this should be defined by math.h; If it is not, the miranda
29: * prototype would be wrong; Since we prefer compile-time errors to
30: * run-time errors, it's declared here. */
31: extern double exp(double);
33: #endif /* _ANSI_MATH_H */
35: double pow10(double x)
37: return exp(x*M_LN10);