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#include "defines.h"
#include "EquationBankPtah.h"
EquationBankPtah::EquationBankPtah()
{
number_of_equations = 20;
}
uint32_t EquationBankPtah::compute(int equation_number, uint32_t t, uint32_t p1, uint32_t p2, uint32_t p3)
{
switch(equation_number)
{
case 0: // Buildup
w = (((t/(p3+1)*t)%p1)&(t-t/p2*632));
break;
case 1: // Silent treatment
w = t-t+t*p1|t&(p3+1)|t/p2;
break;
case 2: // Ryg's musical one-liner (with variations) - keeper, not good for looper though
w = ((t*("363646292929289"[t>>13&14]&15))/p1&p2)+(((((t>>12)^(t>>12)-2)%11*t)/4|t&(t%(p3 * 100)))&63);
break;
case 3: // The Signs
w = ((0&(251&(t/(100+p1))))|((w/t|(t/(100*(p2+1))))*(t|p3)));
break;
case 4: // Degraded Thumper
w = (t*(p1/(t%+10))&t>>(p3>>4))&((t*(p1>>5))&t>>(p2>>5))|(t>>4&p2);
break;
case 5: // BitWiz Transplant
w = (t-((t&p1)*p2-1668899)*((t>>15)%15*t))>>((t>>12)%16)>>(p3%15);
break;
case 6: // Derived Grit
w = (w|((t>>2)+6)+t%(p1<<3))/(((p2<<3)+1)/(p1+1))+p3;
break;
case 7: // Screetchy
w = (t*((t>>(p1%16)|p2>>9)&63-p3&t>>4))>>((t>>12)%15);
break;
case 8: // Arp Rotator
w = ((t>>(p1>>4))&(t<<3)/(t*p2*(t>>11)%(3+((t>>(16-(p3>>4)))%22))));
break;
case 9: // Question / Answer
w = ((t*(t>>8|t>>p3)&p2&t>>8))^(t&t>>p1|t>>6);
break;
case 10: // Magnified
w = (p1&t%p3)^(t/p2);
break;
case 11: // Triangle Wiggler
w = (t*(4|7&t>>13)>>((~t>>p1)&1)&p3) + ((t)*(t>>11&t>>13)*((~t>>9)&3)&p2);
break;
case 12: // Triangle Wiggler 2
w = ((t>>(p1>>4))|t|t>>6)*p3+4*(t&(t>>(p2>>4))|t>>(p1>>4));
break;
case 13: // GGT2
w = ((p1|(t>>(t>>13)%14))*((t>>(p1%12))-p2&249))>>((t>>13)%6)>>((p3>>4)%12);
break;
case 14: // Abducted
w = (p1+t>>p2%12)|((w%(p1+t>>p1%4))+11+p3^t)>>(p3>>12);
break;
case 15: // My quiet friend
w = (((t>>((p1>>12)%12))%(t>>((p2%12)+1))%(t>>((t>>(p3%10))%12)))/((t>>((p2>>2)%15))%15))<<2;
break;
case 16: // My loud friend
w = (((t>>((p1>>12)%12))%(t>>((p2%12)+1))-(t>>((t>>(p3%10))%12)))/((t>>((p1>>2)%15))%15))<<4;
break;
case 17: // Light reactor
w = ((t>>3)*(p1-643|(325%t|p2)&t)-((t>>6)*35/p3%t))>>6;
break;
case 18: // Timing master
w = (((t>>(t>>(p2%15))%16)/((t>>((t>>(p3%15))%15))%12)+p1)*((t>>(p1%12))+15))<<4;
break;
case 19: // Pulse click beat - from MorphWiz, modified by Bret
w = ((t*((50*p1)/(t%20011))&t>>(p1>>12))-((t*3)&t>>((p3>>5)%255))|(t>>4&(255-p2)));
break;
}
// It might seem strange that the output is being bitshifed 4 bits - leaving 8 bits for
// the actual output and setting the 4 LSB to 0. I experimented with 12-bit equation
// output and it sounded worse, not better, than the 8-bit output. That's not because
// 12-bit is bad, but because all of the bytebeat tools out there are tuned for 8-bits.
// If there were some 12-bit bytebeat creation tools, things would be different.
return(((uint32_t) w) << 4);
}