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aifmmux: use alternative way to check for inf

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MSVC emits a divide-by-zero error when compiling aiffmux.c on line 205.
Fixes #623881.
This commit is contained in:
David Hoyt 2010-07-09 17:44:56 +03:00 committed by Stefan Kost
parent e467a3e14b
commit 3172e11121
1 changed files with 12 additions and 1 deletions
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13
gst/aiff/aiffmux.c
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@ -183,6 +183,17 @@ typedef struct AVExtFloat
guint8 mantissa[8];
} AVExtFloat;
/* Courtesy http://www.devx.com/tips/Tip/42853 */
static inline gint
gst_aiff_mux_isinf (gdouble x)
{
volatile gdouble temp = x;
if ((temp == x) && ((temp - x) != 0.0))
return (x < 0.0 ? -1 : 1);
else
return 0;
}
static void
gst_aiff_mux_write_ext (GstByteWriter * writer, double d)
{
@ -202,7 +213,7 @@ gst_aiff_mux_write_ext (GstByteWriter * writer, double d)
} else if (f != 0.0) {
ext.exponent[0] = 0x7f;
ext.exponent[1] = 0xff;
if (f != 1 / 0.0)
if (!gst_aiff_mux_isinf (f))
ext.mantissa[0] = ~0;
}
if (d < 0)