kc3-lang/gnulib/lib/integer_length.h

• Show log

  Commit

• Hash : 281b825e
  Author :
  Date : 2018-01-01T00:57:25
  

  maint: Run 'make update-copyright'
  

Download

• lib/integer_length.h

• /* integer_length - find most significant bit in an unsigned integer.
     Copyright (C) 2011-2018 Free Software Foundation, Inc.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 3 of the License, or
     (at your option) any later version.
  
     This program 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 General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  /* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
  
  #ifndef _INTEGER_LENGTH_H
  #define _INTEGER_LENGTH_H
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  /* These functions return the minimum number of bits required to represent
     the given unsigned integer.
     For non-zero values, this is the position of the most significant bit
     that is set, plus one.  For zero, it is 0.  */
  
  /* Returns the integer length of x.
     The result is >= 0, <= sizeof (unsigned int) * CHAR_BIT.  */
  extern int integer_length (unsigned int x);
  
  /* Returns the integer length of x.
     The result is >= 0, <= sizeof (unsigned long) * CHAR_BIT.  */
  extern int integer_length_l (unsigned long x);
  
  #if HAVE_UNSIGNED_LONG_LONG_INT
  /* Returns the integer length of x.
     The result is >= 0, <= sizeof (unsigned long long) * CHAR_BIT.  */
  extern int integer_length_ll (unsigned long long x);
  #endif
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* _INTEGER_LENGTH_H */
  

Download