inversesqrt

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Return the inverse of the square root of the parameter.

Declaration[edit]

genType inversesqrt( genType x );
genDType inversesqrt( genDType x );


Parameters[edit]

x - Specify the value of which to take the inverse of the square root.


Description[edit]

 inversesqrt returns the inverse of the square root of $x$; i.e. the value $1 \over { \sqrt x }$. The result is undefined if $x \leq 0$.


Version Support[edit]

inversesqrt (genType) 1.3+
inversesqrt (genDType) 4.0+

See Also[edit]

 pow , sqrt 


Copyright[edit]

Copyright© 2011-2014 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. http://opencontent.org/openpub/.