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calc.cpp
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#include <math.h>
#include <string>
#include <vector>
#include <fstream>
#include "calc.h"
// arm-linux-gnueabihf-g++ (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0
// links against 2.29 instead of 2.4, but the rM1 may not have 2.29 symbols
// NOTE: use `objdump -T src/build/<binary> | grep GLIBC_` to check symbols
//
#ifdef REMARKABLE
__asm__(".symver log,log@GLIBC_2.4"); // was 2.29
__asm__(".symver pow,pow@GLIBC_2.4"); // was 2.29
#endif
void Calculator::handleNumPad(int keyid) {
switch (keyid) {
case keycodes::kexit:
exit(0);
case keycodes::kzero:
maybePush();
append('0');
break;
case keycodes::kone:
maybePush();
append('1');
break;
case keycodes::ktwo:
maybePush();
append('2');
break;
case keycodes::kthree:
maybePush();
append('3');
break;
case keycodes::kfour:
maybePush();
append('4');
break;
case keycodes::kfive:
maybePush();
append('5');
break;
case keycodes::ksix:
maybePush();
append('6');
break;
case keycodes::kseven:
maybePush();
append('7');
break;
case keycodes::keight:
maybePush();
append('8');
break;
case keycodes::knine:
maybePush();
append('9');
break;
case keycodes::kdot:
maybePush();
append('.');
break;
case keycodes::kexp:
append('E');
break;
}
}
void Calculator::handleUnaryOp(int keyid) {
double res;
switch (keyid) {
case keycodes::kdrop:
shuffleDown();
didOp();
break;
case keycodes::kback:
if (!stack[0]->isBlank()) {
stack[0]->dropLastDigit();
}
undidOp();
break;
case keycodes::kpercent:
if (stack[0]->isBlank()) {
return;
}
stack[0]->setValue(stack[0]->getValue()/100.0);
didOp();
break;
case keycodes::kround:
if (stack[0]->isBlank()) {
return;
}
stack[0]->setValue(std::floor(stack[0]->getValue() + 0.5));
didOp();
break;
case keycodes::ksqrt:
if (stack[0]->isBlank()) {
return;
}
stack[0]->setValue(std::sqrt(stack[0]->getValue()));
didOp();
break;
case keycodes::klog:
if (stack[0]->isBlank()) {
return;
}
stack[0]->setValue(std::log10(stack[0]->getValue()));
didOp();
break;
case keycodes::kln:
if (stack[0]->isBlank()) {
return;
}
stack[0]->setValue(std::log(stack[0]->getValue()));
didOp();
break;
case keycodes::kneg:
if (stack[0]->isBlank()) {
return;
}
res = stack[0]->getValue();
stack[0]->setValue(-res);
didOp();
break;
case keycodes::ktorad:
if (stack[0]->isBlank()) {
return;
}
res = stack[0]->getValue();
stack[0]->setValue(torad(res));
didOp();
break;
case keycodes::ktodeg:
if (stack[0]->isBlank()) {
return;
}
res = stack[0]->getValue();
stack[0]->setValue(todeg(res));
didOp();
break;
case keycodes::ksquare:
if (stack[0]->isBlank()) {
return;
}
res = stack[0]->getValue();
stack[0]->setValue(res * res);
didOp();
break;
case keycodes::kreciprocal:
if (stack[0]->isBlank()) {
return;
}
stack[0]->setValue(1.0 / stack[0]->getValue());
didOp();
break;
case keycodes::kfact:
if ((stack[0]->isBlank())||(stack[0]->getValue()<1.0)) {
return;
}
res=1.0;
for(double i = 1.0; i <= stack[0]->getValue(); i++) {
res *= i;
}
stack[0]->setValue(res);
didOp();
break;
case keycodes::kabs:
if (stack[0]->isBlank()) {
return;
}
stack[0]->setValue(std::abs(stack[0]->getValue()));
break;
case keycodes::kpower:
res = std::pow(stack[1]->getValue(), stack[0]->getValue());
shuffleDown();
stack[0]->setValue(res);
didOp();
break;
case keycodes::kxsqrty:
res = std::pow(stack[1]->getValue(), 1.0/stack[0]->getValue());
shuffleDown();
stack[0]->setValue(res);
didOp();
break;
case keycodes::ktenx:
res = std::pow(10.0, stack[0]->getValue());
stack[0]->setValue(res);
didOp();
break;
case keycodes::kex:
res = std::pow(2.718281828459045, stack[0]->getValue());
stack[0]->setValue(res);
didOp();
break;
case keycodes::kcosh:
res = std::cosh(stack[0]->getValue());
if (stack[0]->isBlank()) {
return;
}
stack[0]->setValue(res);
didOp();
break;
case keycodes::ksinh:
res = std::sinh(stack[0]->getValue());
if (stack[0]->isBlank()) {
return;
}
stack[0]->setValue(res);
didOp();
break;
case keycodes::ktanh:
res = std::tanh(stack[0]->getValue());
if (stack[0]->isBlank()) {
return;
}
stack[0]->setValue(res);
didOp();
break;
case keycodes::kcos:
res = stack[0]->getValue();
if(angmode==1) {
res=torad(res);
}
res = std::cos(res);
if (stack[0]->isBlank()) {
return;
}
stack[0]->setValue(res);
didOp();
break;
case keycodes::ksin:
res = stack[0]->getValue();
if(angmode==1) {
res=torad(res);
}
res = std::sin(res);
if (stack[0]->isBlank()) {
return;
}
stack[0]->setValue(res);
didOp();
break;
case keycodes::ktan:
res = stack[0]->getValue();
if(angmode==1) {
res=torad(res);
}
res = std::tan(res);
if (stack[0]->isBlank()) {
return;
}
stack[0]->setValue(res);
didOp();
break;
case keycodes::kacos:
if (stack[0]->isBlank()) {
return;
}
res = std::acos(stack[0]->getValue());
if(angmode==1) {
res=todeg(res);
}
stack[0]->setValue(res);
didOp();
break;
case keycodes::kasin:
if (stack[0]->isBlank()) {
return;
}
res = std::asin(stack[0]->getValue());
if(angmode==1) {
res=todeg(res);
}
stack[0]->setValue(res);
didOp();
break;
case keycodes::katan:
if (stack[0]->isBlank()) {
return;
}
res = std::atan(stack[0]->getValue());
if(angmode==1) {
res=todeg(res);
}
stack[0]->setValue(res);
didOp();
break;
}
}
void Calculator::handleBinaryOp(int keyid) {
double res;
switch (keyid) {
case keycodes::kplus:
res = stack[0]->getValue() + stack[1]->getValue();
shuffleDown();
stack[0]->setValue(res);
didOp();
break;
case keycodes::kminus:
res = stack[1]->getValue() - stack[0]->getValue();
shuffleDown();
stack[0]->setValue(res);
didOp();
break;
case keycodes::ktimes:
res = stack[1]->getValue() * stack[0]->getValue();
shuffleDown();
stack[0]->setValue(res);
didOp();
break;
case keycodes::kdiv:
res = stack[1]->getValue() / stack[0]->getValue();
shuffleDown();
stack[0]->setValue(res);
didOp();
break;
case keycodes::kmod:
res = std::fmod(stack[1]->getValue(), stack[0]->getValue());
shuffleDown();
stack[0]->setValue(res);
didOp();
break;
}
}
void Calculator::handleConstants(int keyid) {
switch(keyid) {
case keycodes::ke:
shuffleUp();
stack[0]->setValue(2.718281828459045);
break;
case keycodes::kpi:
shuffleUp();
stack[0]->setValue(3.141592653589793);
break;
case keycodes::kangmode:
break;
}
}
void Calculator::handleStack(int keyid) {
double res;
switch(keyid) {
case keycodes::kpush:
if (stack[0]->isBlank()) {
stack[0]->setText(stack[1]->getText());
}
shuffleUp();
break;
case keycodes::kswap:
if (stack[0]->isBlank()) {
break;
}
res = stack[0]->getValue();
stack[0]->setValue(stack[1]->getValue());
stack[1]->setValue(res);
didOp();
break;
}
}
void Calculator::buttonPressed(Key key) {
try {
handleNumPad(key.id);
handleUnaryOp(key.id);
handleBinaryOp(key.id);
handleConstants(key.id);
handleStack(key.id);
} catch(std::exception& e) {
std::ofstream file;
file.open("/tmp/rpnerr.txt");
file<< "Exception" << e.what() << std::endl;
file.close();
}
}
double Calculator::torad(double v) {
return v*M_PI/180.0;
}
double Calculator::todeg(double v) {
return v*180.0/M_PI;
}
void Calculator::didOp()
{
prevWasOp = true;
}
void Calculator::undidOp()
{
prevWasOp = false;
}
void Calculator::maybePush()
{
if (prevWasOp) {
shuffleUp();
}
prevWasOp = false;
}
void Calculator::setOutputs(std::vector<StackElement*> stack)
{
this->stack = stack;
for (auto elem : stack) {
elem->setText("");
}
}
void Calculator::append(const char digit) {
stack[0]->append(digit);
}
void Calculator::shuffleDown() {
for (auto i = 1; i < stack.size(); i++) {
stack[i-1]->setText(stack[i]->getText());
}
stack[stack.size()-1]->setText("");
}
void Calculator::shuffleUp() {
if (stack[0]->isBlank()) {
return;
}
for (auto i = stack.size()-1; i > 0; i--) {
stack[i]->setText(stack[i-1]->getText());
}
stack[0]->setText("");
}