signbit
signbit
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signbit Test for sign bit.

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int `signbit` float intn `signbit` floatn int `signbit` double longn `signbit` doublen

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int `signbit` (half) // if half extension enabled shortn `signbit` (halfn) // if half extension enabled

## Description

The built-in function `signbit` tests for sign bit. The scalar version of the function returns a 1 if the sign bit in the float is set else returns 0. The vector version of the function returns the following for each component in float`n`: -1 (i.e. all bits set) if the sign bit in the float is set else returns 0.

## Notes

&relationalFunctionsInc1; &relationalFunctionsInc2;

## Specification

OpenCL Specification

## Also see

Relational Functions

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