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ATAN
— Arctangent functionATAN(X)
computes the arctangent of X.
X = ATAN(X)
X | The type shall be REAL(*) .
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REAL(*)
and it lies in the
range - \pi / 2 \leq \arcsin (x) \leq \pi / 2.
program test_atan real(8) :: x = 2.866_8 x = atan(x) end program test_atan
Name | Argument | Return type | Option
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DATAN(X) | REAL(8) X | REAL(8) | f95, gnu
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