Provided by: opencl-1.2-man-doc_1.0~svn27110-1_all 
NAME
Macros_and_Limits - Macros for math limits.
DESCRIPTION
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 0x1.0p-126f
#define FLT_EPSILON 0x1.0p-23f
The macro names given in the following list (available if the double 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 0x1.0p-1022
#define DBL_EPSILON 0x1.0p-52
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(3clc) : 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 0x1.0p-14h
#define HALF_EPSILON 0x1.0p-10h
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
SPECIFICATION
OpenCL Specification[1]
SEE ALSO
mathFunctions(3clc), mathConstants(3clc), FP_CONTRACT(3clc), scalarDataTypes(3clc),
vectorDataTypes(3clc), reservedDataTypes(3clc), otherDataTypes(3clc)
AUTHORS
The Khronos Group
COPYRIGHT
Copyright © 2007-2011 The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and/or
associated documentation files (the "Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Materials, and to permit persons to whom the Materials are furnished to do so, subject to
the condition that this copyright notice and permission notice shall be included in all copies or
substantial portions of the Materials.
NOTES
1. OpenCL Specification
page 252, section 6.12.2.1 - Floating-point macros and pragmas