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Paul Squires edited this page Oct 19, 2026 · 2 revisions

Home › Converting Data Types › CSng

CSng

Converts a number or string to a Single.

Syntax

Declare Function CSng ( ByVal expression As datatype ) As Single
Type typename
Declare Operator Cast ( ) As Single
End Type

Parameters

  • expression
  • datatype
  • typename

Description

The CSng function returns a 32-bit Single value. The function does not check for an overflow, so be sure not to pass a value outside the representable range of the Single data type. The name can be explained as 'Convert to SiNGle'.

If the argument to CSng is a string expression, it is first converted to numeric by using Val.

Return Value

A Single precision value.

Remarks

Usage

result = CSng( numeric expression )

result = CSng( string expression )

result = CSng( user defined type )

Differences from QB

  • The string argument was not allowed in QB

See also

Examples

' Using the CSNG function to convert a numeric value

'Create an SINGLE variable

Dim numeric_value As Single

'Convert a numeric value

numeric_value = CSng(-12345.123)

'Print the result, should return -12345.123

Print numeric_value

Sleep

Category: Converting Data Types
Kind: function


Reproduced from the FreeBASIC Wiki Manual under the GNU Free Documentation License 1.3 — with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts. Copyright © the FreeBASIC project and wiki contributors. See License.

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