Double ceil (double x); float ceil (float x); long double ceil (long double x); Round up value Rounds x upward, returning the smallest integral value that is not less than x.

C++ Undefined Reference

1. C library function - ceil - The C library function double ceil(double x) returns the smallest integer value greater than or equal to x.
2. The function I tried to use was ceil and I get the following error:: undefined reference to `ceil' collect2: ld returned 1 exit status I am using the latest Ubuntu and math.h is there. I tried to use -lm in a different computer and it work perfectly. Does anyone know how to solve this problem?

The Math.ceil() function always rounds a number up to the next largest integer.

Note: Math.ceil(null) returns integer 0 and does not give a NaN error.

Syntax

Parameters

Return value

The smallest integer greater than or equal to the given number.

Description

Because ceil() is a static method of Math, you always use it as Math.ceil(), rather than as a method of a Math object you created (Math is not a constructor).

Undefined Reference To Main

Examples

Using Math.ceil()

The following example shows example usage of Math.ceil().

Decimal adjustment

Undefined Reference To Ceiling Light

Specifications

Undefined Reference To Ceil'

Browser compatibility

BCD tables only load in the browser

See also

Ceilf

Similar topics

Undefined Reference To Ceilf'