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ATAND
— Arctangent function, degreesATAND(X)
computes the arctangent of X in degrees (inverse of
TAND).
This function is for compatibility only and should be avoided in favor of standard constructs wherever possible.
GNU extension, enabled with -fdec-math.
Elemental function
RESULT = ATAND(X) |
RESULT = ATAND(Y, X) |
X | The type shall be REAL or COMPLEX ;
if Y is present, X shall be REAL. |
Y | The type and kind type parameter shall be the same as X. |
The return value is of the same type and kind as X.
If Y is present, the result is identical to ATAND2(Y,X)
.
Otherwise, it is the arcus tangent of X, where the real part of
the result is in degrees and lies in the range
-90 \leq \Re \atand(x) \leq 90.
program test_atand real(8) :: x = 2.866_8 x = atand(x) end program test_atand
Name | Argument | Return type | Standard |
ATAND(X) | REAL(4) X | REAL(4) | GNU extension |
DATAND(X) | REAL(8) X | REAL(8) | GNU extension |