tests/datagen.h

/*
    datagen.h - compressible data generator header
    Copyright (C) Yann Collet 2012-2024

    GPL v2 License

    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 2 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, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

    You can contact the author at :
   - LZ4 source repository : https://github.com/lz4/lz4
   - Public forum : https://groups.google.com/forum/#!forum/lz4c
*/


#include <stddef.h>   /* size_t */

/* RDG_genOut():
 * Generate @size bytes of compressible data into stdout.
 * Compressibility can be controlled using @matchProba.
 * @LitProba is optional, and affect variability of bytes. If @litProba==0.0, default value is used.
 * Generated data can be influenced using @seed.
 * If @matchProba, @litProba and @seed are equal, the function always generates the same content.
 */
void RDG_genOut(unsigned long long size, double matchProba, double litProba, unsigned seed);

/*
 * RDG_genBuffer():
 * Same as RDG_genOut, but generates data into provided @buffer
 */
void RDG_genBuffer(void* buffer, size_t size, double matchProba, double litProba, unsigned seed);