mxIsDouble (Fortran)

Determine whether mxArray represents data as double-precision, floating-point numbers

Fortran Syntax

#include "fintrf.h"
integer*4 mxIsDouble(pm)
mwPointer pm

Description

mxIsDouble returns 1 if the mxArray stores its real and imaginary data as double-precision, floating-point numbers. Otherwise, it returns 0.

Older versions of MATLAB^® store all mxArray data as double-precision, floating-point numbers. However, starting with MATLAB Version 5 software, MATLAB can store real and imaginary data in other numerical formats.

In Fortran, calling mxIsDouble is equivalent to calling:

mxGetClassName(pm) .eq. 'double'

Input Arguments

expand all

`pm` — MATLAB array
`mwPointer`

Pointer to an mxArray array, specified as mwPointer.

Examples

To open an example, type:

edit([fullfile(matlabroot,"extern","examples","refbook","filename")]);

where filename is:

fulltosparse.F

To open an example, type:

edit([fullfile(matlabroot,"extern","examples","mx","filename")]);

where filename is:

mxgetepsf.F

Version History

Introduced before R2006a