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instance method

BigDecimal#-@

-self → bigdecimal

ext/bigdecimal/bigdecimal.c View on GitHub ↗

static VALUE
BigDecimal_neg(VALUE self)
{
    ENTER(5);
    Real *c, *a;
    GUARD_OBJ(a, GetVpValue(self, 1));
    GUARD_OBJ(c, NewZeroWrapLimited(1, a->Prec *(VpBaseFig() + 1)));
    VpAsgn(c, a, -1);
    return VpCheckGetValue(c);
}

Returns the BigDecimal negation of self:

Example

b0 = BigDecimal('1.5')
b1 = -b0 # => -0.15e1
b2 = -b1 # => 0.15e1

See also #- #/ #+@ #< also in 3.3 · 3.1 · 3.0

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