SUB_WAVELET/Fortran/FUNC_sign.f90

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Fortran
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2025-04-17 11:06:03 +08:00
!<21><><EFBFBD>ź<EFBFBD><C5BA><EFBFBD>
real*8 function FUNC_sign(A)
implicit none
real*8 :: A
if(isnan(A)) then
FUNC_sign = sqrt(-1.0)
elseif(A>0) then
FUNC_sign = 1.0
elseif(A<0) then
FUNC_sign = -1.0
elseif(A==0) then
FUNC_sign = 0.0
end if
end function