Elemental Intrinsic Function (Generic): Returns the absolute spacing of model numbers near the argument value.
Syntax
Results:
The result type is the same as x. The result has the value be-p. Parameters b, e, and p are defined in Model for Real Data. If the result value is outside of the real model range, the result is TINY(x).
Compatibility
CONSOLE STANDARD GRAPHICS QUICKWIN GRAPHICS WINDOWS DLL LIB
See Also: TINY, RRSPACING, Data Representation Models
Examples
If 3.0 is a REAL(4) value, SPACING (3.0) has the value 2-22.
The following shows another example:
REAL(4) res4
REAL(8) res8, r2
res4 = SPACING(3.0) ! returns 2.384186E-07
res4 = SPACING(-3.0) ! returns 2.384186E-07
r2 = 487923.3
res8 = SPACING(r2) ! returns 5.820766091346741E-011