mtell
Returns the offset of the current byte relative to the beginning of a file
Syntax
mtell([fd])
Arguments
- fd
a scalar: a file descriptor returned by the function
mopen
.-1
stands for last opened file. Default value is-1
.
Description
The function mtell
returns the offset of the
current byte relative to the beginning of the file associated with
the named stream fd
.
Examples
// Open in binary write a temporary file testFile=TMPDIR + '/testFile.bin'; fd = mopen(testFile,'wb'); mput(42,'d'); // Will write 42 in last opened file mtell() // Will return 8, the current position in the file descriptor mput(42+2,'d', fd); // Will open fd transparently to write 42 mtell(fd) // Will return 16, the current position in the file descriptor mseek(0, fd); // return at the beginning of the file mtell(fd) // Will return 0 mclose(fd);
See also
- mclose — closes opened files
- meof — checks if end of file has been reached
- mfprintf — converts, formats, and writes data to a file
- fprintfMat — writes a matrix in a file
- mfscanf — reads input from the stream pointer stream (interface to the C fscanf function)
- fscanfMat — reads a matrix from a text file
- mget — parses numbers in a binary file and returns them as decimals
- mgetstr — reads a character string from a file
- mopen — opens files in Scilab
- mprintf — converts, formats, and writes data to the main scilab window
- mput — writes byte or word in a given binary format
- mputstr — write a single text in an open file
- mseek — sets current position in a binary file
- mdelete — deletes file(s)
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