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add tests that seem to show that the guint64/gdouble conversions are correct.

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Original commit message from CVS:
* gst/gstutils.c: (gst_util_guint64_to_gdouble),
(gst_util_gdouble_to_guint64), (gst_util_uint64_scale_int64):
* gst/gstutils.h:
* tests/check/gst/gstutils.c: (GST_START_TEST), (gst_utils_suite):
add tests that seem to show that the guint64/gdouble conversions
are correct.
This commit is contained in:
Thomas Vander Stichele 2005-12-04 09:57:11 +00:00
parent 524be39cf7
commit 057de1f845
3 changed files with 45 additions and 18 deletions
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9
ChangeLog
View file

@ -1,3 +1,12 @@
2005-12-04 Thomas Vander Stichele <thomas at apestaart dot org>
* gst/gstutils.c: (gst_util_guint64_to_gdouble),
(gst_util_gdouble_to_guint64), (gst_util_uint64_scale_int64):
* gst/gstutils.h:
* tests/check/gst/gstutils.c: (GST_START_TEST), (gst_utils_suite):
add tests that seem to show that the guint64/gdouble conversions
are correct.
2005-12-02 Wim Taymans <wim@fluendo.com> 2005-12-02 Wim Taymans <wim@fluendo.com>
* gst/gstregistry.c: (gst_registry_add_path): * gst/gstregistry.c: (gst_registry_add_path):

26
gst/gstutils.c
View file

@ -297,40 +297,40 @@ gst_util_set_object_arg (GObject * object, const gchar * name,
} }
} }
#ifdef WIN32
/* work around error C2520: conversion from unsigned __int64 to double /* work around error C2520: conversion from unsigned __int64 to double
* not implemented, use signed __int64 */ * not implemented, use signed __int64 */
/** /**
* gst_guint64_to_gdouble: * gst_util_guint64_to_gdouble:
* @value: the value to convert * @value: the #guint64 value to convert
* *
* Convert @value to a gdouble. This is implemented as a function * Convert @value to a gdouble. This is implemented as a function
* because on some platforms a 64bit int to double conversion is * because on some platforms a 64bit int to double conversion is
* not defined/implemented. * not defined/implemented.
* *
* Returns: @value converted to a double. * Returns: @value converted to a #gdouble.
*/ */
gdouble gdouble
gst_guint64_to_gdouble (guint64 value) gst_util_guint64_to_gdouble (guint64 value)
{ {
if (value & 0x8000000000000000) if (value & G_GINT64_CONSTANT (0x8000000000000000))
return (gdouble) ((gint64) value) + (gdouble) 18446744073709551616.; return (gdouble) ((gint64) value) + (gdouble) 18446744073709551616.;
else else
return (gdouble) ((gint64) value); return (gdouble) ((gint64) value);
} }
/** /**
* gst_gdouble_to_guint64: * gst_util_gdouble_to_guint64:
* @value: the value to convert * @value: the #gdouble value to convert
* *
* Convert @value to a guint64. This is implemented as a function * Convert @value to a guint64. This is implemented as a function
* because on some platforms a double to guint64 conversion is not * because on some platforms a double to guint64 conversion is not
* defined/implemented. * defined/implemented.
* *
* Returns: @value converted to a double. * Returns: @value converted to a #guint64.
*/ */
guint64 guint64
gst_gdouble_to_guint64 (gdouble value) gst_util_gdouble_to_guint64 (gdouble value)
{ {
if (value < (gdouble) 9223372036854775808.) /* 1 << 63 */ if (value < (gdouble) 9223372036854775808.) /* 1 << 63 */
return ((guint64) ((gint64) value)); return ((guint64) ((gint64) value));
@ -338,10 +338,8 @@ gst_gdouble_to_guint64 (gdouble value)
value -= (gdouble) 18446744073709551616.; value -= (gdouble) 18446744073709551616.;
return ((guint64) ((gint64) value)); return ((guint64) ((gint64) value));
} }
#endif
/* convenience struct for getting high and low uint32 parts of
/* convenience struct for getting high an low uint32 parts of
* a guint64 */ * a guint64 */
typedef union typedef union
{ {
@ -434,7 +432,7 @@ gst_util_uint64_scale_int64 (guint64 val, guint64 num, guint64 denom)
v.ll = val; v.ll = val;
n.ll = num; n.ll = num;
/* do 128 bits multiply /* do 128 bits multiply
* nh nl * nh nl
* * vh vl * * vh vl
* ---------- * ----------

28
gst/gstutils.h
View file

@ -33,12 +33,32 @@ void gst_util_set_value_from_string (GValue *value, const gchar *value_str);
void gst_util_set_object_arg (GObject *object, const gchar *name, const gchar *value); void gst_util_set_object_arg (GObject *object, const gchar *name, const gchar *value);
void gst_util_dump_mem (const guchar *mem, guint size); void gst_util_dump_mem (const guchar *mem, guint size);
guint64 gst_util_gdouble_to_guint64 (gdouble value);
gdouble gst_util_guint64_to_gdouble (guint64 value);
/**
* gst_guint64_to_gdouble:
* @value: the #guint64 value to convert
*
* Convert @value to a gdouble.
*
* Returns: @value converted to a #gdouble.
*/
/**
* gst_gdouble_to_guint64:
* @value: the #gdouble value to convert
*
* Convert @value to a guint64.
*
* Returns: @value converted to a #guint64.
*/
#ifdef WIN32 #ifdef WIN32
guint64 gst_gdouble_to_guint64 (gdouble value); #define gst_gdouble_to_guint64(v) gst_util_gdouble_to_guint64(v)
gdouble gst_guint64_to_gdouble (guint64 value); #define gst_guint64_to_gdouble(v) gst_util_guint64_to_gdouble(v)
#else #else
#define gst_gdouble_to_guint64(value) ((guint64) (value)) #define gst_gdouble_to_guint64(value) ((guint64) (value))
#define gst_guint64_to_gdouble(value) ((gdouble) (value)) #define gst_guint64_to_gdouble(value) ((gdouble) (value))
#endif #endif
guint64 gst_util_uint64_scale (guint64 val, guint64 num, guint64 denom); guint64 gst_util_uint64_scale (guint64 val, guint64 num, guint64 denom);