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C++ cmath fmax() function

❮ Math Functions


Example

Return the highest value from different pairs of numbers:

cout << fmax(2.0, 0.25);
cout << fmax(31.2f, 18.0f);
cout << fmax(14, 22);
cout << fmax(96, 2048);
Try it Yourself »

Definition and Usage

The fmax() function returns the number with the highest value from a pair of numbers.

The fmax() function is defined in the <cmath> header file.

Tip: Use the fmin() function to return the number with the lowest value.


Syntax

One of the following:

fmax(double x, double y);
fmax(float x, float y);

Parameter Values

Parameter Description
x Required. Specifies a value to be compared.
If this is an integer type then it will be treated as a double.
y Required. Specified a value to be compared.
If this is an integer type then it will be treated as a double.

Technical Details

Returns: A float value (if all the arguments are float) or double value (in any other case) representing the highest of two numbers.

❮ Math Functions

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