CVD

• Source: https://www.freebasic.net/wiki/wikka.php?wakka=KeyPgCvd
• Last revised: 2016-03-12

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Converts a 64-bit integer or 8-byte string to a double-precision value

Syntax

declare function Cvd ( byval l as longint ) as double
declare function Cvd ( byref str as const string ) as double

Usage

result = Cvd( l )
result = Cvd( str )

Parameters

l

A 64-bit Longint with a binary copy of a double-precision variable stored in it.

str

A String at least 8 bytes in length with a binary copy of a double-precision variable stored in it.

Return Value

Returns a Double value holding a binary copy of the input value.

Description

Does a binary copy from a 64-bit Longint or 8-byte String to a Double variable. A value of zero (0.0) is returned if the string is less than 8 bytes in length. The result will make sense only if the parameter contained a IEEE-754 formatted double-precision value, such as one generated by Cvlongint or Mkd.

This function is useful to read numeric values from buffers without using a Type definition.

Examples

start GeSHi

Dim d As Double, l As LongInt
d = 1.125
l = CVLongInt(d)

Print Using "l = _&H&"; Hex(l)
Print Using "cvd(i) = &"; CVD(l)

end GeSHi

Differences from QB

• QB did not support integer arguments.

See also

• Mkd
• Cvs
• Cvlongint

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