1 /* atof.c: converts an ASCII string to float
3 Copyright (C) 2003 Jesus Calvino-Fraga, jesusc@ieee.org
5 This 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.
10 This 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.
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
25 float value, fraction;
30 while (isspace(*s)) s++;
44 //Get the integer part
45 for (value=0.0; isdigit(*s); s++)
47 value=10.0*value+(*s-'0');
54 for (fraction=0.1; isdigit(*s); s++)
56 value+=(*s-'0')*fraction;
61 //Finally, the exponent (not very efficient, but enough for now*/