fmax-fmaxf-fmaxl.md

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fmax, fmaxf, fmaxl | Microsoft Docs		11/04/2016			cpp devlang-cpp		article	fmax fmaxf fmaxl	msvcrt.dll msvcr80.dll msvcr90.dll msvcr100.dll msvcr100_clr0400.dll msvcr110.dll msvcr110_clr0400.dll msvcr120.dll msvcr120_clr0400.dll ucrtbase.dll api-ms-win-crt-math-l1-1-0.dll	DLLExport	fmax fmaxf fmaxl math/fmax math/fmaxf math/fmaxl	C++	fmax function fmaxf function fmaxl function	a773ccf7-495e-4a9a-8c6d-dfb53e341e35	11	corob-msft	corob	ghogen

fmax, fmaxf, fmaxl

Determine the larger of two specified numeric values.

Syntax

double fmax(  
   double x,   
   double y  
);  
  
float fmax(  
   float x,   
   float y  
); //C++ only  
  
long double fmax(  
   long double x,   
   long double y  
); //C++ only  
  
float fmaxf(  
   float x,   
   float y  
);  
  
long double fmaxl(  
   long double x,   
   long double y  
);  
  

Parameters

[in] x
The first value to compare.

[in] y
The second value to compare.

Return Value

If successful, returns the larger of x or y. The value returned is exact, and does not depend on any form of rounding.

Otherwise, may return one of the following values:

Issue	Return
x = NaN	y
y = NaN	x
x and y = NaN	NaN

This function does not use the errors specified in _matherr.

Remarks

Because C++ allows overloading, you can call overloads of fmax that take and return float and long double types. In a C program, fmax always takes and returns a double.

Requirements

Function	C header	C++ header
fmax, fmaxf, fmaxl	<math.h>	<cmath> or <math.h>

For additional compatibility information, see Compatibility.

See Also

Alphabetical Function Reference
fmin, fminf, fminl