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INVERSESQRT(3G) [FIXME: manual] INVERSESQRT(3G)

NAME

inversesqrt - return the inverse of the square root of the parameter

DECLARATION

genType inversesqrt(genType x);

genDType inversesqrt(genDType x);

PARAMETERS

x

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

DESCRIPTION

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

OpenGL Shading Language Version
Function Name 1.10 1.20 1.30 1.40 1.50 3.30 4.00 4.10 4.20 4.30 4.40 4.50
inversesqrt (genType) - - ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
inversesqrt (genDType) - - - - - - ✔ ✔ ✔ ✔ ✔ ✔

SEE ALSO

pow(), sqrt()

COPYRIGHT

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/.

COPYRIGHT

Copyright © 2011-2014 Khronos Group

01/03/2018 [FIXME: source]