Intel® Fortran Compiler Classic and Intel® Fortran Compiler Developer Guide and Reference
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TAN
Elemental Intrinsic Function (Generic): Produces the tangent of an argument in radians.
result = TAN (x)
x  |  
      (Input) Must be of type real or complex. If x is of type real, it must be in radians and is treated as modulo.  |  
     
Results
The result type and kind are the same as x.
If x is of type real, the result is a value in radians.
If x is of type complex, the real part of the result is a value in radians.
Specific Name  |  
        Argument Type  |  
        Result Type  |  
       
|---|---|---|
TAN  |  
        REAL(4)  |  
        REAL(4)  |  
       
DTAN  |  
        REAL(8)  |  
        REAL(8)  |  
       
QTAN  |  
        REAL(16)  |  
        REAL(16)  |  
       
CTAN 1  |  
        COMPLEX(4)  |  
        COMPLEX(4)  |  
       
CDTAN 2  |  
        COMPLEX(8)  |  
        COMPLEX(8)  |  
       
CQTAN  |  
        COMPLEX(16)  |  
        COMPLEX(16)  |  
       
1The setting of compiler options specifying real size can affect CTAN. 2This function can also be specified as ZTAN.  |  
       ||
Example
TAN (2.0) has the value -2.185040.
TAN (0.8) has the value 1.029639.