In mathematics, the Toronto function T(m,n,r) is a modification of the confluent hypergeometric function defined by Heatley (1943), Weisstein, as

${\displaystyle T(m,n,r)=r^{2n-m+1}e^{-r^{2)){\frac {\Gamma ({\frac {1}{2))m+{\frac {1}{2)))}{\Gamma (n+1))){}_{1}F_{1}({\textstyle {\frac {1}{2))}m+{\textstyle {\frac {1}{2))};n+1;r^{2}).}$

Later, Heatley (1964) recomputed to 12 decimals the table of the M(R)-function, and gave some corrections of the original tables. The table was also extended from x = 4 to x = 16 (Heatley, 1965). An example of the Toronto function has appeared in a study on the theory of turbulence (Heatley, 1965).