Function isSubnormal

Determines whether x is a denormilized number or not.

bool isSubnormal(F) (
  F x
)
if (isFloatingPoint!F);

Denormalized number is a number between 0 and 1 that cannot be represented as 

 m*2e

where m is the mantissa and e is an exponent that fits into the exponent field of the type F.

0 is neither normalized nor denormalized.

Parameters

NameDescription
F Type of the floating point number.
x Floating point number.

Returns

true if x is a denormilized number, false otherwise.

See Also

isNormal.

Example

assert(!isSubnormal(0.0f));
assert(!isSubnormal(float.nan));
assert(!isSubnormal(float.infinity));
assert(!isSubnormal(0.3f));
assert(isSubnormal(5.87747e-38f / 10));

assert(!isSubnormal(0.0));
assert(!isSubnormal(double.nan));
assert(!isSubnormal(double.infinity));
assert(!isSubnormal(1.4));
assert(isSubnormal(1.11254e-307 / 10));

assert(!isSubnormal(0.0L));
assert(!isSubnormal(real.nan));
assert(!isSubnormal(real.infinity));