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Gwyddion Library Reference Manual | ![]() |
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gwymacrosgwymacros — Utility macros |
#define gettext (x) #define ngettext (sing, plur, n) #define _ (x) #define N_ (x) #define gwy_object_unref (obj) #define GWY_SWAP (t, x, y) #define GWY_FIND_PSPEC (type, id, spectype) #define gwy_strequal (a, b) #define GWY_CLAMP (x, low, hi) #define gwy_debug (format...) void gwy_debug_gnu (const gchar *domain, const gchar *fileline, const gchar *funcname, const gchar *format, ...);
#define gwy_object_unref(obj)
If obj is not NULL, unreferences obj. In all cases sets obj to NULL.
If the object reference count is greater than one, assure it should be referenced elsewhere, otherwise it leaks memory.
obj : | A pointer to GObject or NULL (must be an l-value). |
#define GWY_SWAP(t, x, y)
Swaps two variables (more precisely lhs and rhs expressions) of type t in a single statement.
t : | A C type. |
x : | A variable of type t to swap with x. |
y : | A variable of type t to swap with y. |
#define GWY_FIND_PSPEC(type, id, spectype)
A convenience g_object_class_find_property() wrapper.
It expands to property spec cast to correct type (spec).
type : | Object type (e.g. GWY_TYPE_CONTAINER). |
id : | Property id. |
spectype : | Param spec type (e.g. DOUBLE). |
#define gwy_strequal(a, b)
Expands to TRUE if strings are equal, to FALSE otherwise.
a : | A string. |
b : | Another string. |
#define GWY_CLAMP(x, low, hi)
Ensures that x is between the limits set by low and hi.
This macro differs from GLib's CLAMP() by G_UNLIKELY() assertions on the tests that x is smaller than low and larger than hi. This makes x already being in the right range the fast code path.
It is supposed to be used on results of floating-point operations that should fall to a known range but may occasionaly fail to due to rounding errors and in similar situations. Under normal circumstances, use CLAMP().
x : | The value to clamp. |
low : | The minimum value allowed. |
hi : | The maximum value allowed. |
#define gwy_debug(format...)
Prints a debugging message.
Does nothing if compiled without DEBUG defined.
format... : | A format string followed by stuff to print. |
void gwy_debug_gnu (const gchar *domain, const gchar *fileline, const gchar *funcname, const gchar *format, ...);
Print a debugging message.
To be used via gwy_debug(), should not be used directly.
domain : | Log domain. |
fileline : | File and line info. |
funcname : | Function name. |
format : | Message format. |
... : | Message parameters. |
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