Ruby ceil library function

The ceil() function in Ruby is used to return the next highest integer value by rounding up value if necessary.

Ruby ceil - Syntax

mixed ceil(mixed  n);

Ruby ceil - Parameter and Retun type

`mixed n`	Specifies the real number (int, long, float, double) (*Required)
`Return int`	Returns an integer respective to an input argument.

Example: #1 - Ruby ceil

Round the floating point number from 1.0 to 2.0 step by 0.1 using ceiling math method and print the resultant in console.

Ruby Input Screen

class MathExample

    def getCeilValue
        num1 = (1.0).ceil;
        num2 = (1.1).ceil;
        num3 = (1.2).ceil;
        num4 = (1.3).ceil;
        num5 = (1.4).ceil;
        num6 = (1.5).ceil;
        num7 = (1.6).ceil;
        num8 = (1.7).ceil;
        num9 = (1.8).ceil;
        num10 = (1.9).ceil;
        num11 = (2.0).ceil;

        puts("The ceiling value of 1.0 is " + num1.to_s);
        puts("The ceiling value of 1.1 is " + num2.to_s);
        puts("The ceiling value of 1.2 is " + num3.to_s);
        puts("The ceiling value of 1.3 is " + num4.to_s);
        puts("The ceiling value of 1.4 is " + num5.to_s);
        puts("The ceiling value of 1.5 is " + num6.to_s);
        puts("The ceiling value of 1.6 is " + num7.to_s);
        puts("The ceiling value of 1.7 is " + num8.to_s);
        puts("The ceiling value of 1.8 is " + num9.to_s);
        puts("The ceiling value of 1.9 is " + num10.to_s);
        puts("The ceiling value of 2.0 is " + num11.to_s);
    end

end

obj = MathExample.new
obj.getCeilValue

Ruby Output Screen

The ceiling value of 1.0 is 1

The ceiling value of 1.1 is 2

The ceiling value of 1.2 is 2

The ceiling value of 1.3 is 2

The ceiling value of 1.4 is 2

The ceiling value of 1.5 is 2

The ceiling value of 1.6 is 2

The ceiling value of 1.7 is 2

The ceiling value of 1.8 is 2

The ceiling value of 1.9 is 2

The ceiling value of 2.0 is 2

Example: #2 - Ruby ceil

Round the positive floating point number (random numbers) using ceiling math method and print the resultant in console.

Ruby Input Screen

class MathExample

    def getCeilValue
        num1 = (1.5698).ceil;
        num2 = (1.3093).ceil;
        num3 = (1.0087).ceil;
        num4 = (1.1038).ceil;
        num5 = (1.9573).ceil;
        num6 = (1.7462).ceil;
        num7 = (1.6427).ceil;
        num8 = (1.4128).ceil;
        num9 = (1.8099).ceil;
        num10 = (1.2743).ceil;
        num11 = (2.0001).ceil;

        puts("The ceiling value of 1.5698 is " + num1.to_s);
        puts("The ceiling value of 1.3093 is " + num2.to_s);
        puts("The ceiling value of 1.0087 is " + num3.to_s);
        puts("The ceiling value of 1.1038 is " + num4.to_s);
        puts("The ceiling value of 1.9573 is " + num5.to_s);
        puts("The ceiling value of 1.7462 is " + num6.to_s);
        puts("The ceiling value of 1.6427 is " + num7.to_s);
        puts("The ceiling value of 1.4128 is " + num8.to_s);
        puts("The ceiling value of 1.8099 is " + num9.to_s);
        puts("The ceiling value of 1.2743 is " + num10.to_s);
        puts("The ceiling value of 2.0001 is " + num11.to_s);
    end

end

obj = MathExample.new
obj.getCeilValue

Ruby Output Screen

The ceiling value of 1.5698 is 2

The ceiling value of 1.3093 is 2

The ceiling value of 1.0087 is 2

The ceiling value of 1.1038 is 2

The ceiling value of 1.9573 is 2

The ceiling value of 1.7462 is 2

The ceiling value of 1.6427 is 2

The ceiling value of 1.4128 is 2

The ceiling value of 1.8099 is 2

The ceiling value of 1.2743 is 2

The ceiling value of 2.0001 is 3

Example: #3 - Ruby ceil

Round the negative floating point number (random numbers) using ceiling math method and print the resultant in console.

Ruby Input Screen

class MathExample

    def getCeilValue
        num1 = (-1.5698).ceil;
        num2 = (-1.3093).ceil;
        num3 = (-1.0087).ceil;
        num4 = (-1.1038).ceil;
        num5 = (-1.9573).ceil;
        num6 = (-1.7462).ceil;
        num7 = (-1.6427).ceil;
        num8 = (-1.4128).ceil;
        num9 = (-1.8099).ceil;
        num10 = (-1.2743).ceil;
        num11 = (-2.0001).ceil;

        puts("The ceiling value of -1.5698 is " + num1.to_s);
        puts("The ceiling value of -1.3093 is " + num2.to_s);
        puts("The ceiling value of -1.0087 is " + num3.to_s);
        puts("The ceiling value of -1.1038 is " + num4.to_s);
        puts("The ceiling value of -1.9573 is " + num5.to_s);
        puts("The ceiling value of -1.7462 is " + num6.to_s);
        puts("The ceiling value of -1.6427 is " + num7.to_s);
        puts("The ceiling value of -1.4128 is " + num8.to_s);
        puts("The ceiling value of -1.8099 is " + num9.to_s);
        puts("The ceiling value of -1.2743 is " + num10.to_s);
        puts("The ceiling value of -2.0001 is " + num11.to_s);
    end

end

obj = MathExample.new
obj.getCeilValue

Ruby Output Screen

The ceiling value of -1.5698 is -1

The ceiling value of -1.3093 is -1

The ceiling value of -1.0087 is -1

The ceiling value of -1.1038 is -1

The ceiling value of -1.9573 is -1

The ceiling value of -1.7462 is -1

The ceiling value of -1.6427 is -1

The ceiling value of -1.4128 is -1

The ceiling value of -1.8099 is -1

The ceiling value of -1.2743 is -1

The ceiling value of -2.0001 is -2

Example: #4 - Ruby ceil

Try to round the infinity using ceiling math method, but it will throw an FloatDomainError error.

Ruby Input Screen

class MathExample

    def getCeilValue
        # Positive ∞ infinite value
        n = Float::INFINITY.ceil
        puts("The ceiling value of Infinity is " + n.to_s)

        # Negative ∞ infinite value
        x = (-Float::INFINITY).ceil
        puts("The ceiling value of -Infinity is " + x.to_s)
    end

end

obj = MathExample.new
obj.getCeilValue

Ruby Output Screen

`ceil': Infinity (FloatDomainError)

Related Tags:

ruby
ruby math funtions
ceil
ceiling value
ceil
next highest integer
positive floating point
negative floating point

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