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gst/matroska/ebml-read.c: Use NAN constant instead of 0.0/0.0 if possible. NAN is defined in math.h except on MSVC wh...

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Original commit message from CVS:
* gst/matroska/ebml-read.c: (_ext2dbl):
Use NAN constant instead of 0.0/0.0 if possible. NAN is defined
in math.h except on MSVC where it is defined in xmath.h.
Fixes compilation with MSVC.
This commit is contained in:
Sebastian Dröge 2008-07-02 09:04:50 +00:00
parent 35bcb8d8b0
commit 2c38fcd1e6
2 changed files with 18 additions and 1 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2008-07-02 Sebastian Dröge <sebastian.droege@collabora.co.uk>
* gst/matroska/ebml-read.c: (_ext2dbl):
Use NAN constant instead of 0.0/0.0 if possible. NAN is defined
in math.h except on MSVC where it is defined in xmath.h.
Fixes compilation with MSVC.
2008-07-02 Sebastian Dröge <sebastian.droege@collabora.co.uk>
* gst/matroska/matroska-demux.c: (gst_matroska_demux_reset),

12
gst/matroska/ebml-read.c
View file

@ -31,6 +31,16 @@
#include <math.h>
/* NAN is supposed to be in math.h, Microsoft defines it in xmath.h */
#ifdef _MSC_VER
#include <xmath.h>
#endif
/* If everything goes wrong try 0.0/0.0 which should be NAN */
#ifndef NAN
#define NAN (0.0 / 0.0)
#endif
GST_DEBUG_CATEGORY_STATIC (ebmlread_debug);
#define GST_CAT_DEFAULT ebmlread_debug
@ -706,7 +716,7 @@ _ext2dbl (guint8 * data)
m = (m << 8) + ext.mantissa[i];
e = (((gint) ext.exponent[0] & 0x7f) << 8) | ext.exponent[1];
if (e == 0x7fff && m)
return 0.0 / 0.0;
return NAN;
e -= 16383 + 63; /* In IEEE 80 bits, the whole (i.e. 1.xxxx)
* mantissa bit is written as opposed to the
* single and double precision formats */