stdNormalCdf function

double stdNormalCdf(
  1. num x
)

Standard normal cumulative probability distribution.

Implementation

double stdNormalCdf(num x) {
  return 1.0 - 0.5 * erfc(x * invSqrt2);
  //return 0.5 + 0.5 * erf(x * invSqrt2);
}