Updated datagen (can create sparse files)

1 files changed, 40 insertions, 0 deletions

diff --git a/programs/datagen.h b/programs/datagen.h
new file mode 100644
index 0000000..631d146
--- /dev/null
+++ b/programs/datagen.h
@@ -0,0 +1,40 @@
+/*
+    datagen.h - compressible data generator header
+    Copyright (C) Yann Collet 2012-2015
+
+    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 :
+   - ZSTD source repository : https://github.com/Cyan4973/zstd
+   - Public forum : https://groups.google.com/forum/#!forum/lz4c
+*/
+
+
+#include <stddef.h>   /* size_t */
+
+void RDG_genOut(unsigned long long size, double matchProba, double litProba, unsigned seed);
+void RDG_genBuffer(void* buffer, size_t size, double matchProba, double litProba, unsigned seed);
+/* 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 selected using 'seed'.
+   If (matchProba, litProba and seed) are equal, the function always generate the same content.
+
+   RDG_genBuffer
+   Same as RDG_genOut, but generate data into provided buffer
+*/