1 /* Copyright (C) 1998-2015 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19 #include "math.h"
20 #include "math_private.h"
21 #include <float.h>
22
__ieee754_exp10(double arg)23 double __ieee754_exp10 (double arg)
24 {
25 if (isfinite (arg) && arg < DBL_MIN_10_EXP - DBL_DIG - 10)
26 return DBL_MIN * DBL_MIN;
27 else
28 /* This is a very stupid and inprecise implementation. It'll get
29 replaced sometime (soon?). */
30 return __ieee754_exp (M_LN10 * arg);
31 }
32