cbrt, cbrtf, cbrtl

Calculates the cube root.

Syntax

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
);
#define cbrt(X) // Requires C11 or higher

Parameters

x
Floating-point value

Return value

The cbrt functions return the cube-root of x.

Remarks

Because C++ allows overloading, you can call overloads of cbrt that take float or long double types. In a C program, unless you're using the <tgmath.h> macro to call this function, cbrt always takes and returns double.

If you use the <tgmath.h> cbrt() macro, the type of the argument determines which version of the function is selected. See Type-generic math for details.

By default, this function's global state is scoped to the application. To change this behavior, see Global state in the CRT.

Requirements

For more 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

See also

Math and floating-point support
exp, expf, expl
log, logf, log10, log10f
pow, powf, powl