function
<cmath> <ctgmath>
erfc
double erfc (double x); float erfcf (float x);long double erfcl (long double x);
double erfc (double x); float erfc (float x);long double erfc (long double x); double erfc (T x); // additional overloads for integral types
Compute complementary error function
[画像:complementary error function]
Returns the complementary error function value for x.
The complementary error function is equivalent to:
erfc(x) = 1-erf(x)
Header
<tgmath.h> provides a type-generic macro version of this function.
Additional overloads are provided in this header (
<cmath> ) for the
integral types: These overloads effectively cast
x to a
double before calculations (defined for
T being any
integral type ).
Parameters
- x
- Parameter for the complementary error function.
Example
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/* erfc example */
#include <stdio.h> /* printf */
#include <math.h> /* erfc */
int main ()
{
double param, result;
param = 1.0;
result = erfc (param);
printf ("erfc(%f) = %f\n", param, result );
return 0;
}
Output:
erfc (1.000000) = 0.157299
See also
- erf
- Compute error function (function)
- lgamma
- Compute log-gamma function (function)
- tgamma
- Compute gamma function (function)
