# Difference between revisions of "CVL"

The CVL function decodes a 4-byte STRING generated by MKL\$ (or read from a file) to LONG numeric values.

## Syntax

result& = CVL(stringData\$)

## Examples

Example 1: 4 byte ASCII character strings show how CVL multipliers convert MKL\$ values into a 4 byte LONG value.

PRINT CVL(CHR\$(1) + STRING\$(3, 0)) 'ASC(CHR\$(1)) * 1 = 1 PRINT CVL(CHR\$(0) + CHR\$(1) + STRING\$(2, 0)) 'ASC(CHR\$(1)) * 256 = 256 PRINT CVL(STRING\$(2, 0) + CHR\$(1) + CHR\$(0)) 'ASC(CHR\$(1)) * 256 * 256 = 65536 PRINT CVL(STRING\$(3, 0) + CHR\$(1)) 'ASC(CHR\$(1)) * 256 * 256 * 256 = 16777216

Example 2:

FIELD #1, 4 AS N\$, 12 AS B\$... GET #1 Y& = CVL(N\$)

Explanation: Reads a field from file #1, and converts the first four bytes (N\$) into a long integer value assigned to the variable Y&.
Since the representation of a long number can use up to 10 ASCII characters (ten bytes), writing to a file using MKL\$ conversion, and then reading back with the CVL conversion can save up to 6 bytes of storage space.