Kfpneg - Keithley 4200A-SCS Reference Manual

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Model 4200A-SCS Parameter Analyzer Reference Manual

kfpneg

This command changes the sign of a value and stores the result as a specified variable.

int kfpneg(double *x, double *z);

If the value is positive, it is converted to a negative; if the value is negative, it is converted to a

double res4;

forcev(SMU1, 10.0);/* Output 10 V from SMU1. */

measi(SMU1, &res4);/* Measure SMU1 current; store */

/* in res4. */

kfpneg(&res4, &res4);/* Convert sign of res4; */

./* return results to res4. */

This example changes the sign of a positive voltage reading. forcev outputs a positive 10 V from SMU1.

The current is measured with measi, and the result is stored as res4. kfpneg reads res4 and converts

the data to a negative value. res4 is then overwritten with the converted value.

4200A-901-01 Rev. C / February 2017

A variable containing the number to be converted

A variable where the result of -x is stored

Section 13: LPT library function reference