1  /* Value distribution of plural form expressions.
       2     Copyright (C) 2001-2008 Free Software Foundation, Inc.
       3     Written by Bruno Haible <bruno@clisp.org>, 2001-2005.
       4  
       5     This program is free software: you can redistribute it and/or modify
       6     it under the terms of the GNU General Public License as published by
       7     the Free Software Foundation; either version 3 of the License, or
       8     (at your option) any later version.
       9  
      10     This program 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
      13     GNU General Public License for more details.
      14  
      15     You should have received a copy of the GNU General Public License
      16     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      17  
      18  #ifndef _PLURAL_DISTRIB_H
      19  #define _PLURAL_DISTRIB_H
      20  
      21  
      22  /* Definition of 'struct expression'.  */
      23  #include "plural-exp.h"
      24  
      25  
      26  #ifdef __cplusplus
      27  extern "C" {
      28  #endif
      29  
      30  
      31  /* The value distribution of a plural formula.  */
      32  struct plural_distribution
      33  {
      34    /* The plural formula as a parsed expression.  */
      35    const struct expression *expr;
      36  
      37    /* OFTEN is either NULL or an array of nplurals elements,
      38       OFTEN[j] being true if the value j appears to be assumed infinitely often
      39       by the plural formula.  */
      40    const unsigned char *often;
      41  
      42    /* The length of the OFTEN array.  */
      43    unsigned long often_length;
      44  
      45    /* A function which evaluates the plural formula for min <= n <= max
      46       and returns the estimated number of times the value j was assumed.  */
      47    unsigned int (*histogram) (const struct plural_distribution *self,
      48                               int min, int max, unsigned long j);
      49  };
      50  
      51  
      52  #ifdef __cplusplus
      53  }
      54  #endif
      55  
      56  
      57  #endif /* _PLURAL_DISTRIB_H */