cbrt, cbrtf, cbrtl

Article
2015-04-28

Calculates the cube root.

double cbrt(
   double x 
);
float cbrt(
   float x 
);  // C++ only
long double cbrt(
   long double x
);  // C++ only
float cbrtf(
   float x 
);
long double cbrtl(
   long double x
);

Parameters

x
Floating-point value

Return Value

The cbrt functions return the cube-root of x.

Input	SEH Exception	_matherr Exception
± ∞, QNAN, IND	none	none

Remarks

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

Requirements

Function	C header	C++ header
cbrt, cbrtf, cbrtl	<math.h>	<cmath>

For additional compatibility information, see Compatibility.

Example

// crt_cbrt.c
// Compile using: cl /W4 crt_cbrt.c
// This program calculates a cube root.

#include <math.h>
#include <stdio.h>

int main( void )
{
   double question = -64.64;
   double answer;

   answer = cbrt(question);
   printf("The cube root of %.2f is %.6f\n", question, answer);
}

The cube root of -64.64 is -4.013289

.NET Framework Equivalent

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

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