tt_is_font Function

public pure function tt_is_font(data, offset) result(is_valid)

Check if data at offset contains a valid TrueType/OpenType signature. Recognizes: 00-01-00-00 (standard), "true", "typ1", "OTTO".

Arguments

Type	Intent	Optional	Attributes		Name
integer(kind=int8),	intent(in)			::	data(:)
integer,	intent(in)			::	offset

Return Value logical