diff options
| author | Sebastien Lugan <slugan@users.noreply.github.com> | 2003-11-27 10:10:17 +0000 |
|---|---|---|
| committer | Sebastien Lugan <slugan@users.noreply.github.com> | 2003-11-27 10:10:17 +0000 |
| commit | 2ad6a9770a867ddc3ecc31f61a248152b7c6eeac (patch) | |
| tree | 78aad0bfd92a990bf09c7fe8d41fcfe4cc3853a4 /libopenjpeg/fix.c | |
| parent | a8de4a648a91f5416c6e4bcc2b615ee3aafcec6a (diff) | |
Initial revision
Diffstat (limited to 'libopenjpeg/fix.c')
| -rw-r--r-- | libopenjpeg/fix.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/libopenjpeg/fix.c b/libopenjpeg/fix.c new file mode 100644 index 00000000..6a8a64b4 --- /dev/null +++ b/libopenjpeg/fix.c @@ -0,0 +1,41 @@ +/* + * Copyright (c) 2001-2002, David Janssens + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include "fix.h" + +#ifdef DAVID_WIN32 +#define int64 __int64 +#else +#define int64 long long +#endif + +/* <summary> */ +/* Multiply two fixed-precision rational numbers. */ +/* </summary> */ +int fix_mul(int a, int b) +{ + return (int) ((int64) a * (int64) b >> 13); +} |
