Visible to Intel only — GUID: GUID-8756DD4F-8870-4481-A8F0-4C4EAEE5E335
Visible to Intel only — GUID: GUID-8756DD4F-8870-4481-A8F0-4C4EAEE5E335
IEEE_SUPPORT_SUBNORMAL
Inquiry Module Intrinsic Function (Generic): Returns whether the processor supports IEEE subnormal numbers.
Module
USE, INTRINSIC :: IEEE_ARITHMETIC
result = IEEE_SUPPORT_SUBNORMAL ([x])
x |
(Input; optional) Must be of type REAL; it can be scalar or array valued. |
Results
The result is a scalar of type default logical. If x is omitted, the result has the value true if the processor supports arithmetic operations and assignments with subnormal numbers for all real values; otherwise, false.
If x is specified, the result has the value true if the processor supports arithmetic operations and assignments with subnormal numbers for real variables of the same kind type parameter as x; otherwise, false.
IEEE_SUPPORT_SUBNORMAL () and IEEE_SUPPORT_SUBNORMAL (0.0_16) return .TRUE. even though Intel® Fortran’s implementation does not signal when an underflow results in a REAL (16) subnormal value. Intel® Fortran’s implementation does signal when an underflow results in a REAL (16) zero.
Example
IEEE_SUPPORT_SUBNORMAL () has the value true if IEEE subnormal numbers are supported for all real types.