'\" t
.\"     Title: reciprocal_scale
.\"    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 "RECIPROCAL_SCALE" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "Driver Basics"
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.SH "NAME"
reciprocal_scale \- "scale" a value into range [0, ep_ro)
.SH "SYNOPSIS"
.HP \w'u32\ reciprocal_scale('u
.BI "u32 reciprocal_scale(u32\ " "val" ", u32\ " "ep_ro" ");"
.SH "ARGUMENTS"
.PP
\fIval\fR
.RS 4
value
.RE
.PP
\fIep_ro\fR
.RS 4
right open interval endpoint
.RE
.SH "DESCRIPTION"
.PP
Perform a
\(lqreciprocal multiplication\(rq
in order to
\(lqscale\(rq
a value into range [0, ep_ro), where the upper interval endpoint is right\-open\&. This is useful, e\&.g\&. for accessing a index of an array containing ep_ro elements, for example\&. Think of it as sort of modulus, only that the result isn\*(Aqt that of modulo\&. ;) Note that if initial input is a small value, then result will return 0\&.
.SH "RETURN"
.PP
a result based on val in interval [0, ep_ro)\&.
.SH "COPYRIGHT"
.br