Model 4200A-SCS Parameter Analyzer Reference Manual
Section 13: LPT library function reference
4200A-901-01 Rev. C / February 2017
13-51
LPT commands for math operations
The following commands provide math operations.
kfpabs
This command takes a user-specified positive or negative value and converts it into a positive value that is
returned to a specified variable.
Usage
int kfpabs(double *
x
, double *
z
);
x
Pointer to the variable to be converted to an absolute value
z
Pointer to the variable where the result is stored
Example
double ares2, vb1;
.
.
forcev(SMU1, vb1);/* Output vb1 from SMU1. */
measi(SMU1, &ares2);/* Measure SMU1 current; */
/* store in ares2. */
kfpabs(&ares2, &ares2);/* Convert ares2 to absolute */
/* value; return result to ares2*/
This example takes the absolute value of a current reading.
forcev
outputs vb1 volts from SMU1. This
current is measured with
measi
, and the result is stored in location
ares2
. The absolute value of
ares2
is
then calculated and stored as
ares2
.
Also see
None
kfpadd
This command adds two real numbers and stores the result in a specified variable.
Usage
int kfpadd(double *
x
, double *
y
, double *
z
);
x
The first of two values to add
y
The second of two values to add
z
A variable in which the sum
x
+
y
is stored
Details
The values referenced by
x
and
y
are summed and the result is stored in the location pointed to by
z
.
If an overflow occurs, the result is
±Inf
. If an underflow occurs, the result is zero (0).
