From QB64 Wiki
- Syntax: CVS(2-byte string)
- Numeric values read in from a RANDOM-access or BINARY disk file must be converted from ASCII string characters back into numbers if they are to be arithmetically manipulated.
- SINGLE values can range up to 7 decimal point digits. Decimal point accuracy depends on whole value places taken.
- CVS converts a 4-byte string created by MKS$ to a SINGLE-precision numerical value.
- CVD converts an 8-byte string created by MKD$ to a DOUBLE-precision numerical value.
- CVI converts a 2-byte string created by MKI$ to an INTEGER numerical value.
- CVL converts a 4 byte string created by MKL$ to a LONG integer numerical value.
- CV functions can only be used to convert values from MK$ string function values or data from BINARY files!
- Explanation: Reads a field from file #1, and converts the first four bytes (N$) into a single-precision number assigned to the variable Y.
- Since a single-precision number can contain as many as seven ASCII characters (seven bytes), writing a file using MKS$ conversion, and reading with the CVS conversion, as many as three bytes per number recorded are saved on the storage medium. Even more may be saved if double-precision numbers are required. MKD$ and CVD conversions would be used in this case.