FPU.LDECB(); // B = B - 1
example 1:
#include<LCD4_128.h>
#include<FPU_128.h>
void main()
{
long num;
Init_Fpu(); // Initialize FPU
Lcd_init(); // Initialize LCD
num = 5;
FPU.LWRITEB(1,num);
FPU.LDECB();
FPU.LSET(1);
num = FPU.READLONG();
LCD.PRINT(num);
}
//result : will print 4