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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)