'\" t
.\"     Title: findMSB
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: 05/21/2015
.\"    Manual: [FIXME: manual]
.\"    Source: [FIXME: source]
.\"  Language: English
.\"
.TH "FINDMSB" "3G" "05/21/2015" "[FIXME: source]" "[FIXME: manual]"
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.nh
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.SH "NAME"
findMSB \- find the index of the most significant bit set to 1 in an integer
.SH "DECLARATION"
.HP \w'genIType\ findMSB('u
.BI "genIType findMSB(genIType\ " "value" ");"
.HP \w'genIType\ findMSB('u
.BI "genIType findMSB(genUType\ " "value" ");"
.SH "PARAMETERS"
.PP
\fIvalue\fR
.RS 4
Specifies the value whose bits to scan\&.
.RE
.SH "DESCRIPTION"
.PP
\fBfindMSB\fR
returns the bit number of the most significant bit that is set to 1 in the binary representation of
\fIvalue\fR\&. For positive integers, the result will be the bit number of the most significant bit that is set to 1\&. For negative integers, the result will be the bit number of the most significant bit set to 0\&. For a
\fIvalue\fR
of zero or negative 1, \-1 will be returned\&.
.SH "VERSION SUPPORT"
.TS
allbox tab(:);
lB cB s s s s s s s s s s s
lB cB cB cB cB cB cB cB cB cB cB cB cB.
T{

T}:T{
\fBOpenGL Shading Language Version\fR
T}
T{
\fBFunction Name\fR
T}:T{
\fB1\&.10\fR
T}:T{
\fB1\&.20\fR
T}:T{
\fB1\&.30\fR
T}:T{
\fB1\&.40\fR
T}:T{
\fB1\&.50\fR
T}:T{
\fB3\&.30\fR
T}:T{
\fB4\&.00\fR
T}:T{
\fB4\&.10\fR
T}:T{
\fB4\&.20\fR
T}:T{
\fB4\&.30\fR
T}:T{
\fB4\&.40\fR
T}:T{
\fB4\&.50\fR
T}
.T&
l c c c c c c c c c c c c.
T{
findMSB
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
\-
T}:T{
✔
T}:T{
✔
T}:T{
✔
T}:T{
✔
T}:T{
✔
T}:T{
✔
T}
.TE
.sp
.SH "SEE ALSO"
.PP
\fBfindLSB\fR()
.SH "COPYRIGHT"
.PP
Copyright
\(co
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\&.
\m[blue]\fBhttp://opencontent\&.org/openpub/\fR\m[]\&.
.SH "COPYRIGHT"
.br
Copyright \(co 2011-2014 Khronos Group
.br