Provided by: opengl-4-man-doc_1.0~svn33624-1_all 
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 │ 1.10 │ 1.20 │ 1.30 │ 1.40 │ 1.50 │ 3.30 │ 4.00 │ 4.10 │ 4.20 │ 4.30 │ 4.40 │ 4.50 │
│Name │ │ │ │ │ │ │ │ │ │ │ │ │
├────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
│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
[FIXME: source] 01/03/2018 INVERSESQRT(3G)