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libcubescript/src/lib_math.cc

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#include <limits.h>
/* c++ versions for overloaded math */
#include <stdlib.h>
#include <math.h>
#include "cubescript/cubescript.hh"
namespace cscript {
static constexpr CsFloat PI = 3.14159265358979f;
static constexpr CsFloat RAD = PI / 180.0f;
template<typename T>
struct CsMathVal;
template<>
struct CsMathVal<CsInt> {
static CsInt get(CsValue &tv) {
return tv.get_int();
}
static void set(CsValue &res, CsInt val) {
res.set_int(val);
}
};
template<>
struct CsMathVal<CsFloat> {
static CsFloat get(CsValue &tv) {
return tv.get_float();
}
static void set(CsValue &res, CsFloat val) {
res.set_float(val);
}
};
template<typename T>
struct CsMathNoop {
T operator()(T arg) {
return arg;
}
};
template<typename T, typename F1, typename F2>
static inline void cs_mathop(
CsValueRange args, CsValue &res, T initval,
F1 binop, F2 unop
) {
T val;
if (args.size() >= 2) {
val = binop(CsMathVal<T>::get(args[0]), CsMathVal<T>::get(args[1]));
for (ostd::Size i = 2; i < args.size(); ++i) {
val = binop(val, CsMathVal<T>::get(args[i]));
}
} else {
val = unop(!args.empty() ? CsMathVal<T>::get(args[0]) : initval);
}
CsMathVal<T>::set(res, val);
}
template<typename T, typename F>
static inline void cs_cmpop(CsValueRange args, CsValue &res, F cmp) {
bool val;
if (args.size() >= 2) {
val = cmp(CsMathVal<T>::get(args[0]), CsMathVal<T>::get(args[1]));
for (ostd::Size i = 2; (i < args.size()) && val; ++i) {
val = cmp(val, CsMathVal<T>::get(args[i]));
}
} else {
val = cmp(!args.empty() ? CsMathVal<T>::get(args[0]) : T(0), T(0));
}
res.set_int(CsInt(val));
}
/* overloads for various float types */
inline auto cs_sin(float f) { return sinf(f); }
inline auto cs_sin(double f) { return sin(f); }
inline auto cs_sin(long double f) { return sinl(f); }
inline auto cs_cos(float f) { return cosf(f); }
inline auto cs_cos(double f) { return cos(f); }
inline auto cs_cos(long double f) { return cosl(f); }
inline auto cs_tan(float f) { return tanf(f); }
inline auto cs_tan(double f) { return tan(f); }
inline auto cs_tan(long double f) { return tanl(f); }
inline auto cs_asin(float f) { return asinf(f); }
inline auto cs_asin(double f) { return asin(f); }
inline auto cs_asin(long double f) { return asinl(f); }
inline auto cs_acos(float f) { return acosf(f); }
inline auto cs_acos(double f) { return acos(f); }
inline auto cs_acos(long double f) { return acosl(f); }
inline auto cs_atan(float f) { return atanf(f); }
inline auto cs_atan(double f) { return atan(f); }
inline auto cs_atan(long double f) { return atanl(f); }
inline auto cs_atan2(float f, float f2) { return atan2f(f, f2); }
inline auto cs_atan2(double f, double f2) { return atan2(f, f2); }
inline auto cs_atan2(long double f, long double f2) { return atan2l(f, f2); }
inline auto cs_sqrt(float f) { return sqrtf(f); }
inline auto cs_sqrt(double f) { return sqrt(f); }
inline auto cs_sqrt(long double f) { return sqrtl(f); }
inline auto cs_log(float f) { return logf(f); }
inline auto cs_log(double f) { return log(f); }
inline auto cs_log(long double f) { return logl(f); }
inline auto cs_log10(float f) { return log10f(f); }
inline auto cs_log10(double f) { return log10(f); }
inline auto cs_log10(long double f) { return log10l(f); }
inline auto cs_exp(float f) { return expf(f); }
inline auto cs_exp(double f) { return exp(f); }
inline auto cs_exp(long double f) { return expl(f); }
inline int cs_abs(int i) { return abs(i); }
inline long cs_abs(long i) { return labs(i); }
inline long long cs_abs(long long i) { return llabs(i); }
inline auto cs_abs(float f) { return fabsf(f); }
inline auto cs_abs(double f) { return fabs(f); }
inline auto cs_abs(long double f) { return fabsl(f); }
inline auto cs_floor(float f) { return floorf(f); }
inline auto cs_floor(double f) { return floor(f); }
inline auto cs_floor(long double f) { return floorl(f); }
inline auto cs_ceil(float f) { return ceilf(f); }
inline auto cs_ceil(double f) { return ceil(f); }
inline auto cs_ceil(long double f) { return ceill(f); }
inline auto cs_fmod(float f, float f2) { return fmodf(f, f2); }
inline auto cs_fmod(double f, double f2) { return fmod(f, f2); }
inline auto cs_fmod(long double f, long double f2) { return fmodl(f, f2); }
void cs_init_lib_math(CsState &cs) {
cs.new_command("sin", "f", [](CsState &, CsValueRange args, CsValue &res) {
res.set_float(cs_sin(args[0].get_float() * RAD));
});
cs.new_command("cos", "f", [](CsState &, CsValueRange args, CsValue &res) {
res.set_float(cs_cos(args[0].get_float() * RAD));
});
cs.new_command("tan", "f", [](CsState &, CsValueRange args, CsValue &res) {
res.set_float(cs_tan(args[0].get_float() * RAD));
});
cs.new_command("asin", "f", [](CsState &, CsValueRange args, CsValue &res) {
res.set_float(cs_asin(args[0].get_float()) / RAD);
});
cs.new_command("acos", "f", [](CsState &, CsValueRange args, CsValue &res) {
res.set_float(cs_acos(args[0].get_float()) / RAD);
});
cs.new_command("atan", "f", [](CsState &, CsValueRange args, CsValue &res) {
res.set_float(cs_atan(args[0].get_float()) / RAD);
});
cs.new_command("atan2", "ff", [](
CsState &, CsValueRange args, CsValue &res
) {
res.set_float(cs_atan2(args[0].get_float(), args[1].get_float()) / RAD);
});
cs.new_command("sqrt", "f", [](CsState &, CsValueRange args, CsValue &res) {
res.set_float(cs_sqrt(args[0].get_float()));
});
cs.new_command("loge", "f", [](CsState &, CsValueRange args, CsValue &res) {
res.set_float(cs_log(args[0].get_float()));
});
cs.new_command("log2", "f", [](CsState &, CsValueRange args, CsValue &res) {
res.set_float(cs_log(args[0].get_float()) / M_LN2);
});
cs.new_command("log10", "f", [](CsState &, CsValueRange args, CsValue &res) {
res.set_float(cs_log10(args[0].get_float()));
});
cs.new_command("exp", "f", [](CsState &, CsValueRange args, CsValue &res) {
res.set_float(cs_exp(args[0].get_float()));
});
cs.new_command("min", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
CsInt v = (!args.empty() ? args[0].get_int() : 0);
for (ostd::Size i = 1; i < args.size(); ++i) {
v = ostd::min(v, args[i].get_int());
}
res.set_int(v);
});
cs.new_command("max", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
CsInt v = (!args.empty() ? args[0].get_int() : 0);
for (ostd::Size i = 1; i < args.size(); ++i) {
v = ostd::max(v, args[i].get_int());
}
res.set_int(v);
});
cs.new_command("minf", "f1V", [](
CsState &, CsValueRange args, CsValue &res
) {
CsFloat v = (!args.empty() ? args[0].get_float() : 0);
for (ostd::Size i = 1; i < args.size(); ++i) {
v = ostd::min(v, args[i].get_float());
}
res.set_float(v);
});
cs.new_command("maxf", "f1V", [](
CsState &, CsValueRange args, CsValue &res
) {
CsFloat v = (!args.empty() ? args[0].get_float() : 0);
for (ostd::Size i = 1; i < args.size(); ++i) {
v = ostd::max(v, args[i].get_float());
}
res.set_float(v);
});
cs.new_command("abs", "i", [](CsState &, CsValueRange args, CsValue &res) {
res.set_int(cs_abs(args[0].get_int()));
});
cs.new_command("absf", "f", [](CsState &, CsValueRange args, CsValue &res) {
res.set_float(cs_abs(args[0].get_float()));
});
cs.new_command("floor", "f", [](CsState &, CsValueRange args, CsValue &res) {
res.set_float(cs_floor(args[0].get_float()));
});
cs.new_command("ceil", "f", [](CsState &, CsValueRange args, CsValue &res) {
res.set_float(cs_ceil(args[0].get_float()));
});
cs.new_command("round", "ff", [](
CsState &, CsValueRange args, CsValue &res
) {
CsFloat step = args[1].get_float();
CsFloat r = args[0].get_float();
if (step > 0) {
r += step * ((r < 0) ? -0.5 : 0.5);
r -= cs_fmod(r, step);
} else {
r = (r < 0) ? cs_ceil(r - 0.5) : cs_floor(r + 0.5);
}
res.set_float(r);
});
cs.new_command("+", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_mathop<CsInt>(args, res, 0, ostd::Add<CsInt>(), CsMathNoop<CsInt>());
});
cs.new_command("*", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_mathop<CsInt>(
args, res, 1, ostd::Multiply<CsInt>(), CsMathNoop<CsInt>()
);
});
cs.new_command("-", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_mathop<CsInt>(
args, res, 0, ostd::Subtract<CsInt>(), ostd::Negate<CsInt>()
);
});
cs.new_command("^", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_mathop<CsInt>(
args, res, 0, ostd::BitXor<CsInt>(), [](CsInt val) { return ~val; }
);
});
cs.new_command("~", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_mathop<CsInt>(
args, res, 0, ostd::BitXor<CsInt>(), [](CsInt val) { return ~val; }
);
});
cs.new_command("&", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_mathop<CsInt>(
args, res, 0, ostd::BitAnd<CsInt>(), CsMathNoop<CsInt>()
);
});
cs.new_command("|", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_mathop<CsInt>(
args, res, 0, ostd::BitOr<CsInt>(), CsMathNoop<CsInt>()
);
});
/* special combined cases */
cs.new_command("^~", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
CsInt val;
if (args.size() >= 2) {
val = args[0].get_int() ^ ~args[1].get_int();
for (ostd::Size i = 2; i < args.size(); ++i) {
val ^= ~args[i].get_int();
}
} else {
val = !args.empty() ? args[0].get_int() : 0;
}
res.set_int(val);
});
cs.new_command("&~", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
CsInt val;
if (args.size() >= 2) {
val = args[0].get_int() & ~args[1].get_int();
for (ostd::Size i = 2; i < args.size(); ++i) {
val &= ~args[i].get_int();
}
} else {
val = !args.empty() ? args[0].get_int() : 0;
}
res.set_int(val);
});
cs.new_command("|~", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
CsInt val;
if (args.size() >= 2) {
val = args[0].get_int() | ~args[1].get_int();
for (ostd::Size i = 2; i < args.size(); ++i) {
val |= ~args[i].get_int();
}
} else {
val = !args.empty() ? args[0].get_int() : 0;
}
res.set_int(val);
});
cs.new_command("<<", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_mathop<CsInt>(
args, res, 0, [](CsInt val1, CsInt val2) {
return (val2 < CsInt(sizeof(CsInt) * CHAR_BIT))
? (val1 << ostd::max(val2, CsInt(0)))
: 0;
}, CsMathNoop<CsInt>()
);
});
cs.new_command(">>", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_mathop<CsInt>(
args, res, 0, [](CsInt val1, CsInt val2) {
return val1 >> ostd::clamp(
val2, CsInt(0), CsInt(sizeof(CsInt) * CHAR_BIT)
);
}, CsMathNoop<CsInt>()
);
});
cs.new_command("+f", "f1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_mathop<CsFloat>(
args, res, 0, ostd::Add<CsFloat>(), CsMathNoop<CsFloat>()
);
});
cs.new_command("*f", "f1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_mathop<CsFloat>(
args, res, 1, ostd::Multiply<CsFloat>(), CsMathNoop<CsFloat>()
);
});
cs.new_command("-f", "f1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_mathop<CsFloat>(
args, res, 0, ostd::Subtract<CsFloat>(), ostd::Negate<CsFloat>()
);
});
cs.new_command("div", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_mathop<CsInt>(
args, res, 0, [](CsInt val1, CsInt val2) {
if (val2) {
return val1 / val2;
}
return CsInt(0);
}, CsMathNoop<CsInt>()
);
});
cs.new_command("mod", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_mathop<CsInt>(
args, res, 0, [](CsInt val1, CsInt val2) {
if (val2) {
return val1 % val2;
}
return CsInt(0);
}, CsMathNoop<CsInt>()
);
});
cs.new_command("divf", "f1V", [](
CsState &, CsValueRange args, CsValue &res
) {
cs_mathop<CsFloat>(
args, res, 0, [](CsFloat val1, CsFloat val2) {
if (val2) {
return val1 / val2;
}
return CsFloat(0);
}, CsMathNoop<CsFloat>()
);
});
cs.new_command("modf", "f1V", [](
CsState &, CsValueRange args, CsValue &res
) {
cs_mathop<CsFloat>(
args, res, 0, [](CsFloat val1, CsFloat val2) {
if (val2) {
return CsFloat(fmod(val1, val2));
}
return CsFloat(0);
}, CsMathNoop<CsFloat>()
);
});
cs.new_command("pow", "f1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_mathop<CsFloat>(
args, res, 0, [](CsFloat val1, CsFloat val2) {
return CsFloat(pow(val1, val2));
}, CsMathNoop<CsFloat>()
);
});
cs.new_command("=", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_cmpop<CsInt>(args, res, ostd::Equal<CsInt>());
});
cs.new_command("!=", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_cmpop<CsInt>(args, res, ostd::NotEqual<CsInt>());
});
cs.new_command("<", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_cmpop<CsInt>(args, res, ostd::Less<CsInt>());
});
cs.new_command(">", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_cmpop<CsInt>(args, res, ostd::Greater<CsInt>());
});
cs.new_command("<=", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_cmpop<CsInt>(args, res, ostd::LessEqual<CsInt>());
});
cs.new_command(">=", "i1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_cmpop<CsInt>(args, res, ostd::GreaterEqual<CsInt>());
});
cs.new_command("=f", "f1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_cmpop<CsFloat>(args, res, ostd::Equal<CsFloat>());
});
cs.new_command("!=f", "f1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_cmpop<CsFloat>(args, res, ostd::NotEqual<CsFloat>());
});
cs.new_command("<f", "f1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_cmpop<CsFloat>(args, res, ostd::Less<CsFloat>());
});
cs.new_command(">f", "f1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_cmpop<CsFloat>(args, res, ostd::Greater<CsFloat>());
});
cs.new_command("<=f", "f1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_cmpop<CsFloat>(args, res, ostd::LessEqual<CsFloat>());
});
cs.new_command(">=f", "f1V", [](CsState &, CsValueRange args, CsValue &res) {
cs_cmpop<CsFloat>(args, res, ostd::GreaterEqual<CsFloat>());
});
}
} /* namespace cscript */
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