floorl(3) · carta

Usage

double floor(double x); float floorf(float x); long double floorl(long double x);

_ISOC99_SOURCE { | | _POSIX_C_SOURCE >= 200112L}

Math library (libm, -lm)

These functions return the largest integral value that is not greater than x.

For example, floor(0.5) is 0.0, and floor(-0.5) is -1.0.

These functions return the floor of x.

If x is integral, +0, -0, NaN, or an infinity, x itself is returned.

No errors occur.

For an explanation of the terms used in this section, see attributes(7).

Interface	Attribute	Value
floor(), floorf(), floorl()	Thread safety	MT-Safe