#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifndef M_E
#define M_E 2.71828182845904523536
#endif

#include <spider/runtime/cpu/CPU.hpp>
#include <iostream>
#include <cmath>

using namespace spider;

void check(const char* name, double result, double expected, double tolerance = 1e-9) {
    bool ok = std::abs(result - expected) <= tolerance;
    std::cout << (ok ? "[PASS] " : "[FAIL] ") << name
              << " = " << result
              << " (expected " << expected << ")\n";
}

int main() {
    std::cout << "=== Spider VM Instruction Test: 0x068-0x079 ===\n\n";

    CPU cpu;
    cpu._post = &CPU::imp;

    std::cout << "-- Cast Instructions --\n";

    cpu.RA._f64 = 3.9;
    cpu._dst = &cpu.RA;
    cpu.D2I();
    check("D2I (3.9 -> 3)", cpu.RA._u32, 3.0);

    cpu.RA._f64 = 1e12;
    cpu._dst = &cpu.RA;
    cpu.D2L();
    check("D2L (1e12)", (double)cpu.RA._u64, 1e12);

    std::cout << "\n-- Trigonometric Instructions --\n";

    cpu.RA._f64 = M_PI / 2.0;
    cpu._dst = &cpu.RA;
    cpu.SIN();
    check("SIN(pi/2)", cpu.RA._f64, 1.0);

    cpu.RA._f64 = 0.0;
    cpu._dst = &cpu.RA;
    cpu.COS();
    check("COS(0)", cpu.RA._f64, 1.0);

    cpu.RA._f64 = M_PI / 4.0;
    cpu._dst = &cpu.RA;
    cpu.TAN();
    check("TAN(pi/4)", cpu.RA._f64, 1.0);

    cpu.RA._f64 = 1.0;
    cpu._dst = &cpu.RA;
    cpu.ASIN();
    check("ASIN(1.0)", cpu.RA._f64, M_PI / 2.0);

    cpu.RA._f64 = 1.0;
    cpu._dst = &cpu.RA;
    cpu.ACOS();
    check("ACOS(1.0)", cpu.RA._f64, 0.0);

    cpu.RA._f64 = 1.0;
    cpu._dst = &cpu.RA;
    cpu.ATAN();
    check("ATAN(1.0)", cpu.RA._f64, M_PI / 4.0);

    cpu.RA._f64 = 1.0;
    cpu.RB._f64 = 1.0;
    cpu._dst = &cpu.RA;
    cpu._src = &cpu.RB;
    cpu.ATAN2();
    check("ATAN2(1,1)", cpu.RA._f64, M_PI / 4.0);

    std::cout << "\n-- Exponential Instructions --\n";

    cpu.RA._f64 = 1.0;
    cpu._dst = &cpu.RA;
    cpu.EXP();
    check("EXP(1)", cpu.RA._f64, M_E);

    cpu.RA._f64 = M_E;
    cpu._dst = &cpu.RA;
    cpu.LOG();
    check("LOG(e)", cpu.RA._f64, 1.0);

    cpu.RA._f64 = 100.0;
    cpu.RB._f64 = 10.0;
    cpu._dst = &cpu.RA;
    cpu._src = &cpu.RB;
    cpu.LOGAB();
    check("LOGAB(100,10)", cpu.RA._f64, 2.0);

    cpu.RA._f64 = 2.0;
    cpu.RB._f64 = 10.0;
    cpu._dst = &cpu.RA;
    cpu._src = &cpu.RB;
    cpu.POW();
    check("POW(2,10)", cpu.RA._f64, 1024.0);

    cpu.RA._f64 = 9.0;
    cpu._dst = &cpu.RA;
    cpu.SQRT();
    check("SQRT(9)", cpu.RA._f64, 3.0);

    cpu.RA._f64 = 27.0;
    cpu.RB._f64 = 3.0;
    cpu._dst = &cpu.RA;
    cpu._src = &cpu.RB;
    cpu.ROOT();
    check("ROOT(27,3)", cpu.RA._f64, 3.0);

    std::cout << "\n=== Tests complete ===\n";
    return 0;
}