CVLongInt

FreeBASIC

CVLongInt
 
Converts a double-precision floating-point number or eight-byte string to a LongInt variable

Syntax
Usage

result = CVLongInt( dbl )
result = CVLongInt( str )

Parameters

dbl
A Double floating-point number with a binary copy of a LongInt variable stored in it.
str
A String at least eight bytes in length with a binary copy of a LongInt variable stored in it.

Return Value

A LongInt variable holding a binary copy of the input variable.

Description

Returns a 64-bit LongInt value using the binary data contained in a Double, or a String of at least eight bytes in length. A value of zero (0) is returned if the string is less than eight bytes in length.

CVLongInt is used to convert 8-byte strings created with MKLongInt.

This function can also be used to convert 64-bit integer values from a memory or file buffer without the need for a Type structure. However, just as with the type structure, special care should be taken when using CVLongInt to convert strings that have been read from a buffer.

Example

Dim ll As LongInt, s As String
s = "ABCDEFGH"
ll = CVLongInt(ll)
Print Using "s = ""&"""; s
Print Using "ll = _&H&"; Hex(ll)


Differences from QB

  • In QB an error occurs if the string passed is less than eight bytes in length.
  • QB did not support floating-point arguments.

See also