Routines (alphabetical) > Routines: H > HDF5 Routines > H5F_IS_HDF5

# H5F_IS_HDF5

The H5F_IS_HDF5 function determines if a file is in the HDF5 format.

## Syntax

Result = H5F_IS_HDF5(Filename)

## Return Value

Returns 1 if the file is in the HDF5 format, 0 if otherwise.

## Arguments

### Filename

A string representing the name of the files to be checked.

## Keywords

None

## Version History

5.6 | Introduced

## See Also

H5F_OPEN