Intel® Fortran Compiler 18.0 Developer Guide and Reference

TAN

Elemental Intrinsic Function (Generic): Produces the tangent of an argument.

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.