?? erfc.f90
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real function erfc(x) ! # MS Fortran ! Complementary error function from Numerical Recipes.
implicit none
real :: x real :: t,z
z = abs(x) t = 1.0 / ( 1.0 + 0.5 * z ) erfc = t * exp( -z * z - 1.26551223 + t * & ( 1.00002368 + t * ( 0.37409196 + t * & ( 0.09678418 + t * (-0.18628806 + t * & ( 0.27886807 + t * (-1.13520398 + t * & ( 1.48851587 + t * (-0.82215223 + t * 0.17087277 ))))))))) if ( x.lt.0.0 ) erfc = 2.0 - erfc end function erfc ?? 快捷鍵說明
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