ceil

Returns the value of x rounded upward to the next integer (toward positive infinity).

real ceil(real x)
double ceil(double x)
@trusted pure nothrow @nogc
double
ceil
(
double x
)
float ceil(float x)

Examples

import std.math.traits : isNaN;

assert(ceil(+123.456L) == +124);
assert(ceil(-123.456L) == -123);
assert(ceil(-1.234L) == -1);
assert(ceil(-0.123L) == 0);
assert(ceil(0.0L) == 0);
assert(ceil(+0.123L) == 1);
assert(ceil(+1.234L) == 2);
assert(ceil(real.infinity) == real.infinity);
assert(isNaN(ceil(real.nan)));
assert(isNaN(ceil(real.init)));

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std math rounding functions