sinpi

Computes sin(X * pi) accurately.

Syntax

• res = sinpi(x)

Input argument

• x - a numeric value

Output argument

• res - a numeric value

Description

res = sinpi(x) computes sin(x * pi) accurately.

For odd integers, sinpi(x / 2) is +1 or -1.

For integers, sinpi(x) is exactly zero.

Example

x = [0, 1/2, 1, 3/2, 2];
r = sin(x * pi)
res = sinpi(x)

See also

sin, cospi.

History

Author

Allan CORNET