Difference between revisions of "BINOPEN()"
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Revision as of 14:37, 27 October 2009
Purpose
Function to open a binary file
Syntax
BINOPEN([<expC>,<expN>])
See Also
BIN2I(), BIN2L(), BIN2W(), BINCLOSE(), BINCREATE(), BINREAD(), BINSEEK(), BINWRITE(), FCLOSE(), FOPEN(), I2BIN(), L2BIN()
Description
The BINOPEN() function opens an existing binary file. The <expC> is the name of the file to be opened. The <expN> is the mode in which the file will be opened. The open mode options are:
| Mode | Description |
|---|---|
| 0 | Read-only |
| 1 | Write-only |
| 2 | Read/write |
BINOPEN() returns a file descriptor if it has opened the file successfully, or a -1 if unsuccessful. Since the file descriptor is used to identify open binary files, the BINOPEN() return value should always be assigned to a memory variable. The binary conversion functions may be used in conjunction with the binary file functions.
Example
fd = binopen("file.obj") count = binread(fd, 4) count = bin2l(count) count = l2bin(count + 1) binseek(fd, 512, 0) binwrite(fd, count) binclose(fd)
Products
Recital Database Server, Recital Mirage Server, Recital Terminal Developer
