The OpenD Programming Language

negs

Negate an integer.

int negs(int x, bool overflow)
nothrow @safe @nogc pure pragma(inline, true)
int
negs
()
(
int x
,
ref bool overflow
)
long negs(long x, bool overflow)
cent negs(cent x, bool overflow)

Parameters

x int: operand
overflow bool: set if x cannot be negated, is not affected otherwise

Return Value

Type: int

the negation of x

Examples

bool overflow;
assert(negs(0, overflow) == -0);
assert(!overflow);

assert(negs(1234, overflow) == -1234);
assert(!overflow);

assert(negs(-5678, overflow) == 5678);
assert(!overflow);

assert(negs(int.min, overflow) == -int.min);
assert(overflow);

assert(negs(0, overflow) == -0);
assert(overflow);                   // sticky

bool overflow;
assert(negs(0L, overflow) == -0);
assert(!overflow);

assert(negs(1234L, overflow) == -1234);
assert(!overflow);

assert(negs(-5678L, overflow) == 5678);
assert(!overflow);

assert(negs(long.min, overflow) == -long.min);
assert(overflow);

assert(negs(0L, overflow) == -0);
assert(overflow);                   // sticky

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Source

See Implementation

core checkedint functions