signBit

Determines whether the sign bit of x is set or not.

If the sign bit, x is a negative number, otherwise positive.

bool

signBit

(

)

(

F x

)

if (

)

Parameters

Type: bool

$(D_KEYWORD true) if the sign bit of x is set, $(D_KEYWORD false) otherwise.

assert(signBit(-1.0f));
assert(!signBit(1.0f));

assert(signBit(-1.0));
assert(!signBit(1.0));

assert(signBit(-1.0L));
assert(!signBit(1.0L));