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Function `std.math.isNormal`

Determines if x is normalized.


						
				bool isNormal(X)
				(
				

				  X x
				

				) pure nothrow @nogc @trusted;

A normalized number must not be zero, subnormal, infinite nor NAN.

Parameters

Name	Description
x	a floating point number.

Returns

true if x is normalized.

Example

float f = 3;
double d = 500;
real e = 10e+48;

assert(isNormal(f));
assert(isNormal(d));
assert(isNormal(e));
f = d = e = 0;
assert(!isNormal(f));
assert(!isNormal(d));
assert(!isNormal(e));
assert(!isNormal(real.infinity));
assert(isNormal(-real.max));
assert(!isNormal(real.min_normal/4));

Authors

Walter Bright, Don Clugston, Conversion of CEPHES math library to D by Iain Buclaw and David Nadlinger

License

Boost License 1.0.