Sun-4/SPARC dynamically linked subroutine file
File type: Various data file
A .mex4 file is a compiled dynamically linked subroutine for Sun-4/SPARC systems. It belongs to MATLAB and provides native code that MATLAB can call.
File type category:
Various data file
Date updated: September 27, 2026
MATLAB, developed by MathWorks, uses MEX files to extend the software with compiled subroutines. A MEX4 file contains executable native code rather than ordinary MATLAB script or user data.
This extension identifies a MEX file built for the Sun-4/SPARC platform. It is a platform-specific binary and cannot generally be used on other computer architectures.
Open a MEX4 file by calling it from a compatible legacy version of MATLAB running on a Sun-4/SPARC system. It is normally used as a MATLAB function or subroutine, not opened as a standalone document.
Modern MATLAB versions and current Windows, macOS, and Linux systems generally cannot load this platform-specific file. If MATLAB reports that the file is incompatible, a matching legacy environment is required.
A MEX4 file cannot be meaningfully converted to another document or data format because it contains compiled executable code. If the original source code is available, the subroutine can be rebuilt as a MEX file for a supported platform using a compatible MATLAB development setup.
Software applications that handle other tasks involving mex4 files:
Multiplatform
Language
