File: Mat_VarGetNumberOfFields.3

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.\" Copyright (c) 2012 Christopher C. Hulbert
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\"
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\"
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY CHRISTOPHER C. HULBERT ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED.  IN NO EVENT SHALL CHRISTOPHER C. HULBERT OR CONTRIBUTORS
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
.Dd March 18, 2012
.Dt MAT_VARGETNUMBEROFFIELDS 3
.Os
.Sh NAME
.Nm Mat_VarGetNumberOfFields
.Nd Get the number of fields for a structure variable.
.Sh SYNOPSIS
.Fd #include <matio.h>
.Ft unsigned
.Fo Mat_VarGetNumberOfFields
.Fa "const matvar_t *matvar"
.Fc
.Sh DESCRIPTION
The
.Fn Mat_VarGetNumberOfFields
function returns the number of fields for the structure variable
.Fa matvar.
.Sh RETURN VALUES
The number of fields will be returned on success, and 0 otherwise. Note also
that a structure can validly contain 0 fields.
.Sh SEE ALSO
.Xr Mat_VarGetStructFieldnames 3