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floor, floorl

Header File

math.h

Category

Math Routines

Prototype

double floor(double x);

long double floorl(long double x);

Description

Rounds down.

floor finds the largest integer not greater than x.

floorl is the long double version; it takes a long double argument and returns a long double result.

Return Value

floor returns the integer found as a double. floorl returns the integer found as a long double.

Portability

| POSIX | Win32 | ANSI C | ANSI C++
floor | + | + | + | +
floorl |  | + | + | +

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