4.8.3.102. SWEEP

Table 4.249 Function Name

Language type	Subroutine
FORTRAN	call rd_sweep(x, a, x0, f0, x1, f1, xdot, value, errflg) or sweep(x, a, x0, f0, x1, f1, xdot, value, errflg)
C/C++	rd_sweep(x, a, x0, f0, x1, f1, xdot, &value, &errflg) or sweep(x, a, x0, f0, x1, f1, xdot, &value, &errflg)

Table 4.250 Parameter information

Variable Name	Size	Description
x	double	Specify the independent variable.
a	double	The amplitude of the sinusoidal function.
x0	double	Starting point of the SWEEP function (x value)
f0	double	Initial sine function frequency.
x1	double	Ending point of the SWEEP function. (x value)
f1	double	Ending frequency of the sine function.
xdot	double	Range in which the SWEEP function is fully active
value	double	\(\text{SWEEP=STEP5}(x,{{x}_{0}},0,{{x}_{0}}+xdot,1)+a\sin (2\pi \int{freq(x)dx})\) \(freq(x)=\left\{ \begin{array}{*{35}{l}} {{f}_{0}} & x\le {{x}_{0}} \\ {{f}_{0}}+\frac{{{f}_{1}}-{{f}_{0}}}{{{x}_{1}}-{{x}_{0}}}x & {{x}_{0}}\le x\le {{x}_{1}} \\ {{f}_{1}} & x\ge {{x}_{1}} \\ \end{array} \right.\) \(\int{freq(x)dx}=\left\{ \begin{array}{*{35}{l}} {{f}_{0}}x & x\le {{x}_{0}} \\ {{f}_{0}}{{x}_{0}}+{{f}_{0}}(x-{{x}_{0}})+0.5\frac{{{f}_{1}}-{{f}_{0}}}{{{x}_{1}}-{{x}_{0}}}{{(x-{{x}_{0}})}^{2}} & {{x}_{0}}\le x\le {{x}_{1}} \\ {{f}_{0}}{{x}_{0}}+{{f}_{0}}(x-{{x}_{0}})+0.5\frac{{{f}_{1}}-{{f}_{0}}}{{{x}_{1}}-{{x}_{0}}}{{({{x}_{1}}-{{x}_{0}})}^{2}}+{{f}_{1}}(x-{{x}_{1}}) & x\ge {{x}_{1}} \\ \end{array} \right.\)
errflg	logical	If an error is encountered in invoking Predefined subroutine, this variable becomes true. This variable must be declared as a logical variable.