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FREXP(3clc) OpenCL Manual FREXP(3clc)

NAME

frexp - Extract mantissa and exponent.

floatn frexp(floatn x, __global intn *exp);
floatn frexp(floatn x, __local intn *exp);
floatn frexp(floatn x, __private intn *exp);
float frexp(float x, __global int *exp);
float frexp(float x, __local int *exp);
float frexp(float x, __private int *exp);
doublen frexp(doublen x, __global intn *exp);
doublen frexp(doublen x, __local intn *exp);
doublen frexp(doublen x, __private intn *exp);
double frexp(double x, __global int *exp);
double frexp(double x, __local int *exp);
double frexp(double x, __private int *exp);
halfn frexp(halfn x, __global intn *exp);
halfn frexp(halfn x, __local intn *exp);
halfn frexp(halfn x, __private intn *exp);
half frexp(half x, __global int *exp);
half frexp(half x, __local int *exp);
half frexp(half x, __private int *exp);

DESCRIPTION

Extract mantissa and exponent from x. For each component the mantissa returned is a float with magnitude in the interval [1/2, 1) or 0. Each component of x equals mantissa returned * 2exp.

NOTES

The built-in math functions are not affected by the prevailing rounding mode in the calling environment, and always return the same value as they would if called with the round to nearest even rounding mode.
An application that wants to use half and halfn types will need to include the #pragma OPENCL EXTENSION cl_khr_fp16(3clc) : enable directive.

SPECIFICATION

OpenCL Specification[1]

SEE ALSO

mathFunctions(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 244, section 6.12.2 - Math Functions
06/18/2014 The Khronos Group