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fmax

From cppreference.com
< c‎ | numeric‎ | math
 
 
 
Common mathematical functions
Functions
Basic operations
(C99)
(C99)
fmax
(C99)
(C99)
(C99)
(C99)(C99)(C99)
Exponential functions
(C99)
(C99)
(C99)
(C99)
Power functions
(C99)
(C99)
Trigonometric and hyperbolic functions
(C99)
(C99)
(C99)
Error and gamma functions
(C99)
(C99)
(C99)
(C99)
Nearest integer floating point operations
(C99)(C99)(C99)
(C99)
(C99)(C99)(C99)
Floating point manipulation functions
(C99)(C99)
(C99)
(C99)
Classification
(C99)
(C99)
(C99)
Macro constants
 
Defined in header <math.h>
float       fmaxf( float x, float y );
(since C99)
double      fmax( double x, double y );
(since C99)
long double fmaxl( long double x, long double y );
(since C99)

Returns the larger of two floating point arguments.

If one of the arguments is NaN, this function returns the other argument. If both arguments are NaNs, the function returns NaN.

Contents

[edit] Parameters

x, y - floating point values

[edit] Return value

The larger of two floating point values.

[edit] Example

#include <stdio.h>
#include <math.h>
 
int main()
{
    printf ("fmax(2.0,1.0)        = %.1f\n", fmax(2.0,1.0));
    printf ("fmax(-0.0,+0.0)      = %.1f\n", fmax(-0.0,+0.0));
    printf ("fmax(-INFINITY,+0.0) = %.1f\n", fmax(-INFINITY,+0.0));
    printf ("fmax(NAN,1.0)        = %.1f\n", fmax(NAN,1.0));
    printf ("fmax(NAN,NAN)        = %.1f\n", fmax(NAN,NAN));
 
    return 0;
}

Possible output:

fmax(2.0,1.0)        = 2.0
fmax(-0.0,+0.0)      = 0.0
fmax(-INFINITY,+0.0) = 0.0
fmax(NAN,1.0)        = 1.0
fmax(NAN,NAN)        = nan

[edit] See also

(C99)
smaller of two floating point values
(function) [edit]