Limits of Basic Types3GLIB LibraryLimits of Basic Typesportable method of determining the limits of the standard types.Synopsis
#include <glib.h>
#define G_MININT
#define G_MAXINT
#define G_MAXUINT
#define G_MINSHORT
#define G_MAXSHORT
#define G_MAXUSHORT
#define G_MINLONG
#define G_MAXLONG
#define G_MAXULONG
#define G_MININT8
#define G_MAXINT8
#define G_MAXUINT8
#define G_MININT16
#define G_MAXINT16
#define G_MAXUINT16
#define G_MININT32
#define G_MAXINT32
#define G_MAXUINT32
#define G_MININT64
#define G_MAXINT64
#define G_MAXUINT64
#define G_MAXSIZE
#define G_MINFLOAT
#define G_MAXFLOAT
#define G_MINDOUBLE
#define G_MAXDOUBLE
Description
These macros provide a portable method to determine the limits of some of
the standard integer and floating point types.
Details<anchor id="G-MININT-CAPS"/>G_MININTG_MININT#define G_MININT INT_MIN
The minimum value which can be held in a gint.
<anchor id="G-MAXINT-CAPS"/>G_MAXINTG_MAXINT#define G_MAXINT INT_MAX
The maximum value which can be held in a gint.
<anchor id="G-MAXUINT-CAPS"/>G_MAXUINTG_MAXUINT#define G_MAXUINT UINT_MAX
The maximum value which can be held in a guint.
<anchor id="G-MINSHORT-CAPS"/>G_MINSHORTG_MINSHORT#define G_MINSHORT SHRT_MIN
The minimum value which can be held in a gshort.
<anchor id="G-MAXSHORT-CAPS"/>G_MAXSHORTG_MAXSHORT#define G_MAXSHORT SHRT_MAX
The maximum value which can be held in a gshort.
<anchor id="G-MAXUSHORT-CAPS"/>G_MAXUSHORTG_MAXUSHORT#define G_MAXUSHORT USHRT_MAX
The maximum value which can be held in a gushort.
<anchor id="G-MINLONG-CAPS"/>G_MINLONGG_MINLONG#define G_MINLONG LONG_MIN
The minimum value which can be held in a glong.
<anchor id="G-MAXLONG-CAPS"/>G_MAXLONGG_MAXLONG#define G_MAXLONG LONG_MAX
The maximum value which can be held in a glong.
<anchor id="G-MAXULONG-CAPS"/>G_MAXULONGG_MAXULONG#define G_MAXULONG ULONG_MAX
The maximum value which can be held in a gulong.
<anchor id="G-MININT8-CAPS"/>G_MININT8G_MININT8#define G_MININT8 ((gint8) 0x80)
The minimum value which can be held in a gint8.
Since 2.4
<anchor id="G-MAXINT8-CAPS"/>G_MAXINT8G_MAXINT8#define G_MAXINT8 ((gint8) 0x7f)
The maximum value which can be held in a gint8.
Since 2.4
<anchor id="G-MAXUINT8-CAPS"/>G_MAXUINT8G_MAXUINT8#define G_MAXUINT8 ((guint8) 0xff)
The maximum value which can be held in a guint8.
Since 2.4
<anchor id="G-MININT16-CAPS"/>G_MININT16G_MININT16#define G_MININT16 ((gint16) 0x8000)
The minimum value which can be held in a gint16.
Since 2.4
<anchor id="G-MAXINT16-CAPS"/>G_MAXINT16G_MAXINT16#define G_MAXINT16 ((gint16) 0x7fff)
The maximum value which can be held in a gint16.
Since 2.4
<anchor id="G-MAXUINT16-CAPS"/>G_MAXUINT16G_MAXUINT16#define G_MAXUINT16 ((guint16) 0xffff)
The maximum value which can be held in a guint16.
Since 2.4
<anchor id="G-MININT32-CAPS"/>G_MININT32G_MININT32#define G_MININT32 ((gint32) 0x80000000)
The minimum value which can be held in a gint32.
Since 2.4
<anchor id="G-MAXINT32-CAPS"/>G_MAXINT32G_MAXINT32#define G_MAXINT32 ((gint32) 0x7fffffff)
The maximum value which can be held in a gint32.
Since 2.4
<anchor id="G-MAXUINT32-CAPS"/>G_MAXUINT32G_MAXUINT32#define G_MAXUINT32 ((guint32) 0xffffffff)
The maximum value which can be held in a guint32.
Since 2.4
<anchor id="G-MININT64-CAPS"/>G_MININT64G_MININT64#define G_MININT64 G_GINT64_CONSTANT(0x8000000000000000)
The minimum value which can be held in a gint64.
<anchor id="G-MAXINT64-CAPS"/>G_MAXINT64G_MAXINT64#define G_MAXINT64 G_GINT64_CONSTANT(0x7fffffffffffffff)
The maximum value which can be held in a gint64.
<anchor id="G-MAXUINT64-CAPS"/>G_MAXUINT64G_MAXUINT64#define G_MAXUINT64 G_GINT64_CONSTANT(0xffffffffffffffffU)
The maximum value which can be held in a guint64.
<anchor id="G-MAXSIZE-CAPS"/>G_MAXSIZEG_MAXSIZE#define G_MAXSIZE G_MAXUINT
The maximum value which can be held in a gsize.
Since 2.4
<anchor id="G-MINFLOAT-CAPS"/>G_MINFLOATG_MINFLOAT#define G_MINFLOAT FLT_MIN
The minimum positive value which can be held in a gfloat.
If you are interested in the smallest value which can be held in a gfloat,
use -G_MAX_FLOAT.
<anchor id="G-MAXFLOAT-CAPS"/>G_MAXFLOATG_MAXFLOAT#define G_MAXFLOAT FLT_MAX
The maximum value which can be held in a gfloat.
<anchor id="G-MINDOUBLE-CAPS"/>G_MINDOUBLEG_MINDOUBLE#define G_MINDOUBLE DBL_MIN
The minimum positive value which can be held in a gdouble.
If you are interested in the smallest value which can be held in a gdouble,
use -G_MAXDOUBLE.
<anchor id="G-MAXDOUBLE-CAPS"/>G_MAXDOUBLEG_MAXDOUBLE#define G_MAXDOUBLE DBL_MAX
The maximum value which can be held in a gdouble.