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agomez |
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#include "formula.h" |
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#include "errorhandler.h" |
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#include "mathfunc.h" |
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#include "gadget.h" |
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#include "global.h" |
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Formula::Formula() {
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value = 0.0;
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type = CONSTANT;
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functiontype = NONE;
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}
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Formula::Formula(double initial) {
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value = initial;
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type = CONSTANT;
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functiontype = NONE;
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}
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Formula::~Formula() {
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unsigned int i;
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for (i = 0; i < argList.size(); i++)
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delete argList[i];
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}
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Formula::Formula(FunctionType ft, vector<Formula*> formlist) {
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if (formlist.size() <= 0)
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handle.logMessage(LOGFAIL, "Error in formula - no formula given in parameter list");
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value = 0.0;
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type = FUNCTION;
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functiontype = ft;
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unsigned int i;
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for (i = 0; i < formlist.size(); i++) {
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Formula *f = new Formula(*formlist[i]);
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argList.push_back(f);
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}
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}
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Formula::operator double() const {
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switch (type) {
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case CONSTANT:
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case PARAMETER:
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return value;
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break;
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case FUNCTION:
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double v;
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v = this->evalFunction();
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return v;
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break;
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default:
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handle.logMessage(LOGFAIL, "Error in formula - unrecognised type", type);
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break;
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}
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// JMB need to return something here even though this never happens
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return value;
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}
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double Formula::evalFunction() const {
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double v = 0.0;
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unsigned int i;
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switch (functiontype) {
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case NONE:
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handle.logMessage(LOGFAIL, "Error in formula - no function type found");
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break;
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case MULT:
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v = 1.0;
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for (i = 0; i < argList.size(); i++)
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v *= *(argList[i]);
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break;
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case DIV:
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if (argList.size() == 0) {
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v = 1.0;
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} else if (argList.size() == 1) {
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if (!isZero(*(argList[0]))) {
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v = 1.0 / (*(argList[0]));
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} else {
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handle.logMessage(LOGWARN, "Warning in formula - divide by zero");
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}
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} else {
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v = *(argList[0]);
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for (i = 1; i < argList.size(); i++) {
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if (!isZero(*(argList[0]))) {
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v /= *(argList[i]);
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} else {
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handle.logMessage(LOGWARN, "Warning in formula - divide by zero");
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}
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}
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}
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break;
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case PLUS:
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v = 0.0;
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for (i = 0; i < argList.size(); i++)
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v += *(argList[i]);
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break;
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case MINUS:
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if (argList.size() == 0) {
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v = 0.0;
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} else if (argList.size() == 1) {
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v = -(*(argList[0]));
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} else {
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v = *(argList[0]);
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for (i = 1; i < argList.size(); i++)
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v -= *(argList[i]);
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}
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break;
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case SIN: //JMB note that this works in radians
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if (argList.size() != 1)
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for sin");
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v = sin(*(argList[0]));
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break;
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case COS: //JMB note that this works in radians
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if (argList.size() != 1)
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for cos");
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v = cos(*(argList[0]));
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break;
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case LOG:
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if (argList.size() != 1)
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for log");
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if (*(argList[0]) < verysmall)
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handle.logMessage(LOGWARN, "Warning in formula - cannot take log of zero");
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else
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v = log(*(argList[0]));
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break;
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case EXP:
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if (argList.size() != 1)
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for exp");
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v = exp(*(argList[0]));
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break;
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case LOG10:
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if (argList.size() != 1)
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for log10");
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if (*(argList[0]) < verysmall)
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handle.logMessage(LOGWARN, "Warning in formula - cannot take log10 of zero");
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else
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v = log10(*(argList[0]));
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break;
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case POWER:
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if (argList.size() == 1)
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v = pow(10.0, *(argList[0]));
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else if (argList.size() == 2)
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v = pow(*(argList[0]), *(argList[1]));
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else
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for power");
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break;
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case SQRT:
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if (argList.size() != 1)
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for sqrt");
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if (*(argList[0]) < 0.0)
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handle.logMessage(LOGWARN, "Warning in formula - cannot take sqrt of negative number");
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else
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v = sqrt(*(argList[0]));
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break;
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case RAND:
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if (argList.size() != 1)
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for rand");
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v = *(argList[0]);
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break;
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case LESS:
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if (argList.size() < 2)
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for <");
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v = 1.0;
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for (i = 1; i < argList.size(); i++)
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if (*(argList[i - 1]) >= *(argList[i]))
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v = 0.0;
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break;
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case GREATER:
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if (argList.size() < 2)
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for >");
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v = 1.0;
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for (i = 1; i < argList.size(); i++)
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if (*(argList[i - 1]) <= *(argList[i]))
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v = 0.0;
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break;
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case EQUAL:
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if (argList.size() < 2)
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for =");
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v = 1.0;
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for (i = 1; i < argList.size(); i++)
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if (!isEqual(*(argList[i - 1]), *(argList[i])))
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v = 0.0;
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break;
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case AND:
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if (argList.size() < 1)
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for and");
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v = 1.0;
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for (i = 0; i < argList.size(); i++)
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if (isZero(*(argList[i])))
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v = 0.0;
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break;
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case OR:
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if (argList.size() < 1)
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for or");
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| 210 : |
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v = 0.0;
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| 211 : |
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for (i = 0; i < argList.size(); i++)
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if (!isZero(*(argList[i])))
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v = 1.0;
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| 214 : |
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break;
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| 215 : |
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| 216 : |
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case NOT:
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if (argList.size() != 1)
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for not");
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| 219 : |
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v = 0.0;
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| 220 : |
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if (isZero(*(argList[0])))
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| 221 : |
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v = 1.0;
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| 222 : |
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break;
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| 223 : |
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case ABS:
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| 225 : |
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if (argList.size() != 1)
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| 226 : |
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for abs");
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| 227 : |
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v = fabs(*(argList[0]));
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| 228 : |
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break;
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| 229 : |
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| 230 : |
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case IF:
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| 231 : |
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if (argList.size() != 3)
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| 232 : |
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for if");
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| 233 : |
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v = 0.0;
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| 234 : |
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if (isZero(*(argList[0])))
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| 235 : |
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v = *(argList[2]);
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| 236 : |
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else
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| 237 : |
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v = *(argList[1]);
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| 238 : |
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break;
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| 239 : |
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| 240 : |
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case PI:
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| 241 : |
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if (argList.size() != 1)
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| 242 : |
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handle.logMessage(LOGFAIL, "Error in formula - invalid number of parameters for pi");
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| 243 : |
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v = *(argList[0]);
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| 244 : |
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break;
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| 245 : |
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| 246 : |
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default:
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| 247 : |
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handle.logMessage(LOGFAIL, "Error in formula - unrecognised function type", type);
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| 248 : |
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break;
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| 249 : |
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}
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| 250 : |
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| 251 : |
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return v;
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| 252 : |
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}
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| 253 : |
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| 254 : |
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Formula::Formula(const Formula& initial) {
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| 255 : |
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type = initial.type;
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| 256 : |
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value = initial.value;
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| 257 : |
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functiontype = initial.functiontype;
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| 258 : |
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switch (type) {
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| 259 : |
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case CONSTANT:
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| 260 : |
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break;
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| 261 : |
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case PARAMETER:
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| 262 : |
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name = initial.name;
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| 263 : |
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break;
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| 264 : |
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case FUNCTION:
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| 265 : |
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unsigned int i;
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| 266 : |
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for (i = 0; i < initial.argList.size(); i++) {
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| 267 : |
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Formula* f = new Formula(*initial.argList[i]);
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| 268 : |
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argList.push_back(f);
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| 269 : |
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}
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| 270 : |
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break;
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| 271 : |
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default:
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| 272 : |
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handle.logMessage(LOGFAIL, "Error in formula - unrecognised type", type);
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| 273 : |
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break;
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| 274 : |
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}
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| 275 : |
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}
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| 276 : |
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| 277 : |
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void Formula::setValue(double init) {
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| 278 : |
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if (type == FUNCTION)
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| 279 : |
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handle.logMessage(LOGFAIL, "Error in formula - cannot set value for function");
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| 280 : |
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value = init;
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| 281 : |
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}
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| 282 : |
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| 283 : |
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CommentStream& operator >> (CommentStream& infile, Formula& F) {
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| 284 : |
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if (F.type != CONSTANT)
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| 285 : |
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handle.logFileMessage(LOGFAIL, "failed to read formula data");
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| 286 : |
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| 287 : |
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if (infile.fail())
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| 288 : |
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return infile;
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| 289 : |
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| 290 : |
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/* Read formula expression. Syntax:
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| 291 : |
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3.14 - Constant (CONSTANT)
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| 292 : |
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#param - Single parameter, no initial value (PARAMETER)
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| 293 : |
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1.0#param - Single value, initial value
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| 294 : |
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(* #p1 #p2) - Function call (FUNCTION)
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| 295 : |
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*/
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| 296 : |
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| 297 : |
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infile >> ws;
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| 298 : |
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char c = infile.peek();
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| 299 : |
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| 300 : |
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// Read FUNCTION
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| 301 : |
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if (c == '(') {
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| 302 : |
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infile.get(c);
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| 303 : |
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F.type = FUNCTION;
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| 304 : |
|
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// Read function 'name'
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| 305 : |
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char text[MaxStrLength];
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| 306 : |
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strncpy(text, "", MaxStrLength);
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| 307 : |
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infile >> ws >> text >> ws;
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| 308 : |
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if (strcasecmp(text, "*") == 0) {
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| 309 : |
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F.functiontype = MULT;
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| 310 : |
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| 311 : |
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} else if (strcasecmp(text, "/") == 0) {
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| 312 : |
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F.functiontype = DIV;
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| 313 : |
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| 314 : |
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} else if (strcasecmp(text, "+") == 0) {
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| 315 : |
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F.functiontype = PLUS;
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| 316 : |
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| 317 : |
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} else if (strcasecmp(text, "-") == 0) {
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| 318 : |
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F.functiontype = MINUS;
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| 319 : |
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| 320 : |
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} else if (strcasecmp(text, "sin") == 0) {
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| 321 : |
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F.functiontype = SIN;
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| 322 : |
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| 323 : |
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} else if (strcasecmp(text, "cos") == 0) {
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| 324 : |
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F.functiontype = COS;
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| 325 : |
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| 326 : |
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} else if ((strcasecmp(text, "log") == 0) || (strcasecmp(text, "ln") == 0)) {
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| 327 : |
|
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F.functiontype = LOG;
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| 328 : |
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| 329 : |
|
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} else if (strcasecmp(text, "exp") == 0) {
|
| 330 : |
|
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F.functiontype = EXP;
|
| 331 : |
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| 332 : |
|
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} else if (strcasecmp(text, "log10") == 0) {
|
| 333 : |
|
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F.functiontype = LOG10;
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| 334 : |
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| 335 : |
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} else if ((strcasecmp(text, "power") == 0) || (strcasecmp(text, "**") == 0)) {
|
| 336 : |
|
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F.functiontype = POWER;
|
| 337 : |
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| 338 : |
|
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} else if (strcasecmp(text, "sqrt") == 0) {
|
| 339 : |
|
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F.functiontype = SQRT;
|
| 340 : |
|
|
|
| 341 : |
|
|
} else if (strcasecmp(text, "rand") == 0) {
|
| 342 : |
|
|
F.functiontype = RAND;
|
| 343 : |
|
|
Formula* f = new Formula(randomNumber());
|
| 344 : |
|
|
F.argList.push_back(f);
|
| 345 : |
|
|
if (handle.getRunOptimise())
|
| 346 : |
|
|
handle.logMessage(LOGWARN, "Warning in formula - random function used for optimising run");
|
| 347 : |
|
|
|
| 348 : |
|
|
} else if (strcasecmp(text, "<") == 0) {
|
| 349 : |
|
|
F.functiontype = LESS;
|
| 350 : |
|
|
|
| 351 : |
|
|
} else if (strcasecmp(text, ">") == 0) {
|
| 352 : |
|
|
F.functiontype = GREATER;
|
| 353 : |
|
|
|
| 354 : |
|
|
} else if (strcasecmp(text, "=") == 0) {
|
| 355 : |
|
|
F.functiontype = EQUAL;
|
| 356 : |
|
|
|
| 357 : |
|
|
} else if (strcasecmp(text, "and") == 0) {
|
| 358 : |
|
|
F.functiontype = AND;
|
| 359 : |
|
|
|
| 360 : |
|
|
} else if (strcasecmp(text, "or") == 0) {
|
| 361 : |
|
|
F.functiontype = OR;
|
| 362 : |
|
|
|
| 363 : |
|
|
} else if (strcasecmp(text, "not") == 0) {
|
| 364 : |
|
|
F.functiontype = NOT;
|
| 365 : |
|
|
|
| 366 : |
|
|
} else if (strcasecmp(text, "abs") == 0) {
|
| 367 : |
|
|
F.functiontype = ABS;
|
| 368 : |
|
|
|
| 369 : |
|
|
} else if (strcasecmp(text, "if") == 0) {
|
| 370 : |
|
|
F.functiontype = IF;
|
| 371 : |
|
|
if (handle.getRunOptimise())
|
| 372 : |
|
|
handle.logMessage(LOGWARN, "Warning in formula - if statement used for optimising run");
|
| 373 : |
|
|
|
| 374 : |
|
|
} else if (strcasecmp(text, "pi") == 0) {
|
| 375 : |
|
|
F.functiontype = PI;
|
| 376 : |
|
|
Formula* f = new Formula(pivalue);
|
| 377 : |
|
|
F.argList.push_back(f);
|
| 378 : |
|
|
|
| 379 : |
|
|
} else {
|
| 380 : |
|
|
handle.logFileMessage(LOGFAIL, "unrecognised formula function name", text);
|
| 381 : |
|
|
return infile;
|
| 382 : |
|
|
}
|
| 383 : |
|
|
|
| 384 : |
|
|
c = infile.peek();
|
| 385 : |
|
|
while (c != ')') {
|
| 386 : |
|
|
Formula* f = new Formula();
|
| 387 : |
|
|
infile >> *f;
|
| 388 : |
|
|
F.argList.push_back(f);
|
| 389 : |
|
|
infile >> ws;
|
| 390 : |
|
|
if (infile.eof()) {
|
| 391 : |
|
|
// Something has gone wrong, no closing bracket
|
| 392 : |
|
|
handle.logFileMessage(LOGFAIL, "failed to read formula data");
|
| 393 : |
|
|
return infile;
|
| 394 : |
|
|
}
|
| 395 : |
|
|
c = infile.peek();
|
| 396 : |
|
|
}
|
| 397 : |
|
|
infile.get(c);
|
| 398 : |
|
|
return infile;
|
| 399 : |
|
|
}
|
| 400 : |
|
|
|
| 401 : |
|
|
// Read PARAMETER syntax (no initial value)
|
| 402 : |
|
|
if (c == '#') {
|
| 403 : |
|
|
//No initial value, parameter name only - set it to 1
|
| 404 : |
|
|
F.value = 1.0;
|
| 405 : |
|
|
F.type = PARAMETER;
|
| 406 : |
|
|
infile.get(c);
|
| 407 : |
|
|
infile >> F.name;
|
| 408 : |
|
|
if (strlen(F.name.getName()) <= 0)
|
| 409 : |
|
|
handle.logFileMessage(LOGFAIL, "failed to read parameter name");
|
| 410 : |
|
|
return infile;
|
| 411 : |
|
|
}
|
| 412 : |
|
|
|
| 413 : |
|
|
if (!isdigit(c) && (c != '-')) //JMB check that we actually have a number to read
|
| 414 : |
|
|
handle.logFileMessage(LOGFAIL, "failed to read formula data");
|
| 415 : |
|
|
|
| 416 : |
|
|
// Read initial value (could be CONSTANT or PARAMETER)
|
| 417 : |
|
|
if (!(infile >> F.value))
|
| 418 : |
|
|
return infile;
|
| 419 : |
|
|
|
| 420 : |
|
|
// then '#' if there is one
|
| 421 : |
|
|
c = infile.peek();
|
| 422 : |
|
|
if (infile.fail() && !infile.eof())
|
| 423 : |
|
|
return infile;
|
| 424 : |
|
|
|
| 425 : |
|
|
// Read CONSTANT
|
| 426 : |
|
|
if ((c != '#') || infile.eof()) {
|
| 427 : |
|
|
//If not '#' then return
|
| 428 : |
|
|
F.type = CONSTANT;
|
| 429 : |
|
|
return infile;
|
| 430 : |
|
|
}
|
| 431 : |
|
|
|
| 432 : |
|
|
// Read PARAMETER (with initial value)
|
| 433 : |
|
|
if (c == '#') {
|
| 434 : |
|
|
F.type = PARAMETER;
|
| 435 : |
|
|
infile.get(c);
|
| 436 : |
|
|
infile >> F.name;
|
| 437 : |
|
|
if (strlen(F.name.getName()) <= 0)
|
| 438 : |
|
|
handle.logFileMessage(LOGFAIL, "failed to read parameter name");
|
| 439 : |
|
|
return infile;
|
| 440 : |
|
|
}
|
| 441 : |
|
|
|
| 442 : |
|
|
// If we get to here then things have failed
|
| 443 : |
|
|
handle.logFileMessage(LOGFAIL, "failed to read formula data");
|
| 444 : |
|
|
return infile;
|
| 445 : |
|
|
}
|
| 446 : |
|
|
|
| 447 : |
|
|
void Formula::Inform(Keeper* keeper) {
|
| 448 : |
|
|
// let keeper know of the marked variables
|
| 449 : |
|
|
switch (type) {
|
| 450 : |
|
|
case CONSTANT:
|
| 451 : |
|
|
break;
|
| 452 : |
|
|
case PARAMETER:
|
| 453 : |
|
|
// only one parameter
|
| 454 : |
|
|
keeper->keepVariable(value, name);
|
| 455 : |
|
|
break;
|
| 456 : |
|
|
case FUNCTION:
|
| 457 : |
|
|
// function with multiple parameters
|
| 458 : |
|
|
unsigned int i;
|
| 459 : |
|
|
for (i = 0; i < argList.size(); i++)
|
| 460 : |
|
|
(*argList[i]).Inform(keeper);
|
| 461 : |
|
|
break;
|
| 462 : |
|
|
default:
|
| 463 : |
|
|
handle.logMessage(LOGFAIL, "Error in formula - unrecognised type", type);
|
| 464 : |
|
|
break;
|
| 465 : |
|
|
}
|
| 466 : |
|
|
}
|
| 467 : |
|
|
|
| 468 : |
|
|
void Formula::Interchange(Formula& newF, Keeper* keeper) const {
|
| 469 : |
|
|
while (newF.argList.size() > 0)
|
| 470 : |
|
|
newF.argList.pop_back();
|
| 471 : |
|
|
|
| 472 : |
|
|
newF.type = type;
|
| 473 : |
|
|
newF.value = value;
|
| 474 : |
|
|
newF.functiontype = functiontype;
|
| 475 : |
|
|
switch (type) {
|
| 476 : |
|
|
case CONSTANT:
|
| 477 : |
|
|
break;
|
| 478 : |
|
|
|
| 479 : |
|
|
case PARAMETER:
|
| 480 : |
|
|
newF.name = name;
|
| 481 : |
|
|
keeper->changeVariable(value, newF.value);
|
| 482 : |
|
|
break;
|
| 483 : |
|
|
|
| 484 : |
|
|
case FUNCTION:
|
| 485 : |
|
|
unsigned int i;
|
| 486 : |
|
|
for (i = 0; i < argList.size(); i++) {
|
| 487 : |
|
|
Formula* f = new Formula(*argList[i]);
|
| 488 : |
|
|
newF.argList.push_back(f);
|
| 489 : |
|
|
}
|
| 490 : |
|
|
for (i = 0; i < argList.size(); i++)
|
| 491 : |
|
|
(*argList[i]).Interchange(*newF.argList[i], keeper);
|
| 492 : |
|
|
break;
|
| 493 : |
|
|
|
| 494 : |
|
|
default:
|
| 495 : |
|
|
handle.logMessage(LOGFAIL, "Error in formula - unrecognised type", type);
|
| 496 : |
|
|
break;
|
| 497 : |
|
|
}
|
| 498 : |
|
|
}
|
| 499 : |
|
|
|
| 500 : |
|
|
void Formula::Delete(Keeper* keeper) const {
|
| 501 : |
|
|
switch (type) {
|
| 502 : |
|
|
case CONSTANT:
|
| 503 : |
|
|
break;
|
| 504 : |
|
|
case PARAMETER:
|
| 505 : |
|
|
keeper->deleteParameter(value);
|
| 506 : |
|
|
break;
|
| 507 : |
|
|
case FUNCTION:
|
| 508 : |
|
|
unsigned int i;
|
| 509 : |
|
|
for (i = 0; i < argList.size(); i++)
|
| 510 : |
|
|
(*argList[i]).Delete(keeper);
|
| 511 : |
|
|
break;
|
| 512 : |
|
|
default:
|
| 513 : |
|
|
handle.logMessage(LOGFAIL, "Error in formula - unrecognised type", type);
|
| 514 : |
|
|
break;
|
| 515 : |
|
|
}
|
| 516 : |
|
|
}
|
| 517 : |
|
|
|
| 518 : |
|
|
Formula& Formula::operator = (const Formula& F) {
|
| 519 : |
|
|
type = F.type;
|
| 520 : |
|
|
functiontype = F.functiontype;
|
| 521 : |
|
|
value = F.value;
|
| 522 : |
|
|
switch (type) {
|
| 523 : |
|
|
case CONSTANT:
|
| 524 : |
|
|
break;
|
| 525 : |
|
|
case PARAMETER:
|
| 526 : |
|
|
name = F.name;
|
| 527 : |
|
|
break;
|
| 528 : |
|
|
case FUNCTION:
|
| 529 : |
|
|
unsigned int i;
|
| 530 : |
|
|
for (i = 0; i < argList.size(); i++)
|
| 531 : |
|
|
delete argList[i];
|
| 532 : |
|
|
argList.clear();
|
| 533 : |
|
|
for (i = 0; i < F.argList.size(); i++) {
|
| 534 : |
|
|
Formula *f = new Formula(*F.argList[i]);
|
| 535 : |
|
|
argList.push_back(f);
|
| 536 : |
|
|
}
|
| 537 : |
|
|
break;
|
| 538 : |
|
|
default:
|
| 539 : |
|
|
handle.logMessage(LOGFAIL, "Error in formula - unrecognised type", type);
|
| 540 : |
|
|
break;
|
| 541 : |
|
|
}
|
| 542 : |
|
|
return *this;
|
| 543 : |
|
|
}
|
| 544 : |
|
|
|
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