lib/ldexpf.c

   1 /* Multiply a 'float' by a power of 2.
   2    Copyright (C) 2011-2024 Free Software Foundation, Inc.
   3
   4    This file is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU Lesser General Public License as
   6    published by the Free Software Foundation, either version 3 of the
   7    License, or (at your option) any later version.
   8
   9    This file is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18
  19 /* Specification.  */
  20 #include <math.h>
  21
  22 /* Avoid some warnings from "gcc -Wshadow".
  23    This file doesn't use the exp() function.  */
  24 #undef exp
  25 #define exp exponent
  26
  27 float
  28 ldexpf (float x, int exp)
  29 {
  30   return (float) ldexp ((double) x, exp);
  31 }