The macro names given in the following list must use the values specified. These constant
expressions are suitable for use in #if
preprocessing directives.
#define FLT_DIG

6

#define FLT_MANT_DIG

24

#define FLT_MAX_10_EXP

+38

#define FLT_MAX_EXP

+128

#define FLT_MIN_10_EXP

37

#define FLT_MIN_EXP

125

#define FLT_RADIX

2

#define FLT_MAX

0x1.fffffep127f

#define FLT_MIN

0x1.0p126f

#define FLT_EPSILON

0x1.0p23f

The macro names given in the following list (available if the double precision
option is supported) must use the values specified. These constant expressions
are suitable for use in #if
preprocessing directives.
#define DBL_DIG 
15

#define DBL_MANT_DIG 
53

#define DBL_MAX_10_EXP 
+308

#define DBL_MAX_EXP 
+1024

#define DBL_MIN_10_EXP 
307

#define DBL_MIN_EXP 
1021

#define DBL_MAX 
0x1.fffffffffffffp1023

#define DBL_MIN 
0x1.0p1022

#define DBL_EPSILON 
0x1.0p52

The macro names given in the following list must use the values
specified. These constant expressions are suitable for use in #if
preprocessing directives. An application that wants to use half and
halfn
types will need to include the
#pragma OPENCL EXTENSION
cl_khr_fp16 : enable
directive.
#define HALF_DIG 
3

#define HALF_MANT_DIG 
11

#define HALF_MAX_10_EXP 
+4

#define HALF_MAX_EXP 
+16

#define HALF_MIN_10_EXP 
4

#define HALF_MIN_EXP 
13

#define HALF_MAX 
0x1.ffcp15h

#define HALF_MIN 
0x1.0p14h

#define HALF_EPSILON 
0x1.0p10h

The macro names given in the following list must use the values specified. These constant
expressions are suitable for use in #if
preprocessing directives.
#define CHAR_BIT

8

#define CHAR_MAX

SCHAR_MAX

#define CHAR_MIN

SCHAR_MIN

#define INT_MAX

2147483647

#define INT_MIN 
(2147483647 1)

#define LONG_MAX 
0x7fffffffffffffffL

#define LONG_MIN 
(0x7fffffffffffffffL 1)

#define SCHAR_MAX 
127

#define SCHAR_MIN 
(127  1)

#define SHRT_MAX 
32767

#define SHRT_MIN 
(32767 1)

#define UCHAR_MAX 
255

#define USHRT_MAX

65535

#define UINT_MAX 
0xffffffff

#define ULONG_MAX 
0xffffffffffffffffUL

Math Functions, Symbolic Math Constants, Floating Point Pragma, Scalar Data Types, Vector Data Types, Reserved Data Types, Other Data Types