'\" t
.\"     Title: clamp_val
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: May 2018
.\"    Manual: Driver Basics
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "CLAMP_VAL" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "Driver Basics"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
clamp_val \- return a value clamped to a given range using val\*(Aqs type
.SH "SYNOPSIS"
.HP \w'clamp_val('u
.BI "clamp_val(" "val" ", " "min" ", " "max" ");"
.SH "ARGUMENTS"
.PP
\fIval\fR
.RS 4
current value
.RE
.PP
\fImin\fR
.RS 4
minimum allowable value
.RE
.PP
\fImax\fR
.RS 4
maximum allowable value
.RE
.SH "DESCRIPTION"
.PP
This macro does no typechecking and uses temporary variables of whatever type the input argument \*(Aqval\*(Aq is\&. This is useful when val is an unsigned type and min and max are literals that will otherwise be assigned a signed integer type\&.
.SH "COPYRIGHT"
.br