/usr/share/sdcc/lib/src/ldexpf.c is in sdcc-libraries 2.9.0-5.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | /* ldexpf.c: Build a float from a mantisa and exponent.
Copyright (C) 2001, 2002 Jesus Calvino-Fraga, jesusc@ieee.org
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* Version 1.0 - Initial release */
#include <math.h>
#include <errno.h>
float ldexpf(const float x, const int pw2)
{
union float_long fl;
long e;
fl.f = x;
e=(fl.l >> 23) & 0x000000ff;
e+=pw2;
fl.l= ((e & 0xff) << 23) | (fl.l & 0x807fffff);
return(fl.f);
}
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