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fix(factorial): result should be of the default kind, not double default kind #876

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fix(factorial): result should be of the default kind, not double default kind #876

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c14c9d8
fix(factorial): result should be of the default kind, not double defa…
Sep 23, 2024
a65cc2f
Promote real to real_dp as it should be
Sep 27, 2024
2856a73
fix test
Sep 27, 2024
6d8076f
Add extra digits to fix new precision for test of log_factorial
Sep 30, 2024
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10 changes: 5 additions & 5 deletions src/stdlib_specialfunctions_gamma.fypp
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Original file line number Diff line number Diff line change
Expand Up @@ -528,9 +528,9 @@ contains
! Log(n!)
!
${t1}$, intent(in) :: n
real :: res
real(dp) :: res
${t1}$, parameter :: zero = 0_${k1}$, one = 1_${k1}$, two = 2_${k1}$
real, parameter :: zero_k2 = 0.0
real(dp), parameter :: zero_dp = 0.0_dp

if(n < zero) call error_stop("Error(l_factorial): Logarithm of" &
//" factorial function argument must be non-negative")
Expand All @@ -539,15 +539,15 @@ contains

case (zero)

res = zero_k2
res = zero_dp

case (one)

res = zero_k2
res = zero_dp

case (two : )

res = l_gamma(n + 1, 1.0D0)
res = l_gamma(n + 1, 1.0_dp)

end select
end function l_factorial_${t1[0]}$${k1}$
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