types/org.kotools.types.number/NonPositiveInteger/unaryMinus

unaryMinus

operator fun unaryMinus(): NonNegativeInteger

Returns the negative of this integer.

Calling from Kotlin

Here's an example of calling this function from Kotlin code:

val x: NonPositiveInteger = NonPositiveInteger.fromLong(-42)

val result: NonNegativeInteger = -x

val expected: NonNegativeInteger = NonNegativeInteger.fromLong(42)
check(result == expected)

Calling from Java

Here's an example of calling this function from Java code:

final NonPositiveInteger x = NonPositiveInteger.fromLong(-42L);

final NonNegativeInteger result = x.unaryMinus();

final NonNegativeInteger expected = NonNegativeInteger.fromLong(42L);
final boolean check = result.equals(expected);
if (!check) throw new IllegalStateException("Check failed.");