| <!-- ##### SECTION Title ##### --> |
| Basic Types |
| |
| <!-- ##### SECTION Short_Description ##### --> |
| standard GLib types, defined for ease-of-use and portability. |
| |
| <!-- ##### SECTION Long_Description ##### --> |
| <para> |
| GLib defines a number of commonly used types, which can be divided into |
| 4 groups: |
| |
| <itemizedlist> |
| <listitem><para> |
| New types which are not part of standard C - #gboolean, #gsize, #gssize. |
| </para></listitem> |
| |
| <listitem><para> |
| Integer types which are guaranteed to be the same size across all platforms - |
| #gint8, #guint8, #gint16, #guint16, #gint32, #guint32, #gint64, #guint64. |
| </para></listitem> |
| |
| <listitem><para> |
| Types which are easier to use than their standard C counterparts - |
| #gpointer, #gconstpointer, #guchar, #guint, #gushort, #gulong. |
| </para></listitem> |
| |
| <listitem><para> |
| Types which correspond exactly to standard C types, but are included |
| for completeness - #gchar, #gint, #gshort, #glong, #gfloat, #gdouble. |
| </para></listitem> |
| </itemizedlist> |
| |
| </para> |
| |
| <!-- ##### SECTION See_Also ##### --> |
| <para> |
| |
| </para> |
| |
| <!-- ##### TYPEDEF gboolean ##### --> |
| <para> |
| A standard <type>boolean</type> type. |
| Variables of this type should only contain the value #TRUE or #FALSE. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF gpointer ##### --> |
| <para> |
| An untyped pointer. |
| #gpointer looks better and is easier to use than <type>void*</type>. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF gconstpointer ##### --> |
| <para> |
| An untyped pointer to constant data. |
| The data pointed to should not be changed. |
| </para> |
| <para> |
| This is typically used in function prototypes to indicate that the |
| data pointed to will not be altered by the function. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF gchar ##### --> |
| <para> |
| Corresponds to the standard C <type>char</type> type. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF guchar ##### --> |
| <para> |
| Corresponds to the standard C <type>unsigned char</type> type. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF gint ##### --> |
| <para> |
| Corresponds to the standard C <type>int</type> type. |
| Values of this type can range from #G_MININT to #G_MAXINT. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF guint ##### --> |
| <para> |
| Corresponds to the standard C <type>unsigned int</type> type. |
| Values of this type can range from 0 to #G_MAXUINT. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF gshort ##### --> |
| <para> |
| Corresponds to the standard C <type>short</type> type. |
| Values of this type can range from #G_MINSHORT to #G_MAXSHORT. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF gushort ##### --> |
| <para> |
| Corresponds to the standard C <type>unsigned short</type> type. |
| Values of this type can range from 0 to #G_MAXUSHORT. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF glong ##### --> |
| <para> |
| Corresponds to the standard C <type>long</type> type. |
| Values of this type can range from #G_MINLONG to #G_MAXLONG. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF gulong ##### --> |
| <para> |
| Corresponds to the standard C <type>unsigned long</type> type. |
| Values of this type can range from 0 to #G_MAXULONG. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF gint8 ##### --> |
| <para> |
| A signed integer guaranteed to be 8 bits on all platforms. |
| Values of this type can range from -128 to 127. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF guint8 ##### --> |
| <para> |
| An unsigned integer guaranteed to be 8 bits on all platforms. |
| Values of this type can range from 0 to 255. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF gint16 ##### --> |
| <para> |
| A signed integer guaranteed to be 16 bits on all platforms. |
| Values of this type can range from -32,768 to 32,767. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF guint16 ##### --> |
| <para> |
| An unsigned integer guaranteed to be 16 bits on all platforms. |
| Values of this type can range from 0 to 65,535. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF gint32 ##### --> |
| <para> |
| A signed integer guaranteed to be 32 bits on all platforms. |
| Values of this type can range from -2,147,483,648 to 2,147,483,647. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF guint32 ##### --> |
| <para> |
| An unsigned integer guaranteed to be 32 bits on all platforms. |
| Values of this type can range from 0 to 4,294,967,295. |
| </para> |
| |
| |
| <!-- ##### MACRO G_HAVE_GINT64 ##### --> |
| <para> |
| This macro is defined if 64-bit signed and unsigned integers are available |
| on the platform. |
| </para> |
| |
| |
| |
| <!-- ##### TYPEDEF gint64 ##### --> |
| <para> |
| A signed integer guaranteed to be 64 bits on all platforms on which it is |
| available (see #G_HAVE_GINT64). |
| Values of this type can range from -9,223,372,036,854,775,808 to |
| 9,223,372,036,854,775,807. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF guint64 ##### --> |
| <para> |
| An unsigned integer guaranteed to be 64 bits on all platforms on which it is |
| available (see #G_HAVE_GINT64). |
| Values of this type can range from 0 to 18,446,744,073,709,551,615. |
| </para> |
| |
| |
| <!-- ##### MACRO G_GINT64_CONSTANT ##### --> |
| <para> |
| This macro is used to insert 64-bit integer literals into the source code. |
| </para> |
| |
| @val: a literal integer value, e.g. 0x1d636b02300a7aa7U. |
| |
| |
| <!-- ##### TYPEDEF gfloat ##### --> |
| <para> |
| Corresponds to the standard C <type>float</type> type. |
| Values of this type can range from -#G_MAXFLOAT to #G_MAXFLOAT. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF gdouble ##### --> |
| <para> |
| Corresponds to the standard C <type>double</type> type. |
| Values of this type can range from -#G_MAXDOUBLE to #G_MAXDOUBLE. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF gsize ##### --> |
| <para> |
| An unsigned 32-bit integer intended to represent sizes of data structures. |
| </para> |
| |
| |
| <!-- ##### TYPEDEF gssize ##### --> |
| <para> |
| A signed 32-bit integer intended to represent sizes of data structures. |
| </para> |
| |
| |