delay

Functions

int main(int argc, char *argv[])

delay [ option ] [ infile ]

• -l int

  • length of vector \((1 \le L)\)

• -m int

  • order of vector \((0 \le M)\)

• -s int

  • start index \((S)\)

• -k

  • keep sequence length

• infile str

  • double-type data sequence

• stdout

  • double-type delayed data sequence

The input of this command is

\[ \begin{array}{cccc} x(0), & x(1), & \ldots, & x(T-1) \end{array} \]

and the output is

\[ \begin{array}{cccc} \underbrace{0, \; \ldots, \; 0}_S, & x(0), & \ldots, & x(T-1). \end{array} \]

If -k option is specified, the output is

\[ \begin{array}{cccc} \underbrace{0, \; \ldots, \; 0}_S, & x(0), & \ldots, & x(T-S-1). \end{array} \]

If \(S\) is negative, the output is

\[ \begin{array}{cccc} x(-S), & x(-S+1), & \ldots, & x(T-1). \end{array} \]

See the following examples.

# data: 1, 2, 3
ramp -s 1 -l 3 | delay -s 2 | x2x +da
# 0, 0, 1, 2, 3
ramp -s 1 -l 3 | delay -s 2 -k | x2x +da
# 0, 0, 1
ramp -s 1 -l 3 | delay -s -2 | x2x +da
# 3
ramp -s 1 -l 3 | delay -s -2 -k | x2x +da
# 3, 0, 0

Parameters:

• argc – [in] Number of arguments.

• argv – [in] Argument vector.

Returns:

0 on success, 1 on failure.