Function cis

Syntax:

Arguments and Values:

radians—a real.

number—a complex.

Description:

12.5.2 15cis returns the value of $e^{i·\mathrm{radians}}$, which is a complex in which the real part is equal to the cosine of radians, and the imaginary part is equal to the sine of radians.

Examples:

 (cis 0) → #C(1.0 0.0)

Side Effects:

None.

Affected By:

None.

Exceptional Situations:

None.

See Also:

Section 12.1.3.3 (Rule of Float Substitutability)

Notes:

None.