dawsonreturns a value for Dawson’s Integral, .
For full information please refer to the NAG Library document for s15af
The argument of the function.
The value of Dawson’s Integral, .
dawsonevaluates an approximation for Dawson’s Integral
The function is based on two Chebyshev expansions:
For near zero, , and for large, . These approximations are used for those values of for which the result is correct to machine precision.
NIST Digital Library of Mathematical Functions