.\" Copyright (c) 2015-2026, The matio contributors
.\" Copyright (c) 2012-2014, Christopher C. Hulbert
.\" All rights reserved.
.\"
.\" SPDX-License-Identifier: BSD-2-Clause
.\"
.Dd April 9, 2026
.Dt MAT_VARGETCLASSNAME 3
.Os
.Sh NAME
.Nm Mat_VarGetClassName
.Nd Returns the class name of an opaque MAT variable.
.Sh SYNOPSIS
.Fd #include <matio.h>
.Ft const char *
.Fo Mat_VarGetClassName
.Fa "const matvar_t *matvar"
.Fc
.Sh DESCRIPTION
The
.Fn Mat_VarGetClassName
function returns the class name of a MATLAB Class Object System (MCOS)
variable
.Fa matvar .
For opaque variables such as table, datetime, string, or other MCOS objects,
this returns the class name (e.g. "table", "datetime").
For non-opaque variables or if MCOS support is not enabled, the function
returns NULL.
.Sh RETURN VALUES
A pointer to the class name string, or NULL if the variable is not an
MCOS object or if MCOS support is disabled.
The returned string must not be freed by the caller.
.Sh SEE ALSO
.Xr Mat_VarPrint 3 ,
.Xr Mat_VarRead 3