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/* see copyright notice in squirrel.h */
#include <squirrel.h>
#include <math.h>
#include <stdlib.h>
#include <sqstdmath.h>
#define SINGLE_ARG_FUNC(_funcname, num_ops) static SQInteger math_##_funcname(HSQUIRRELVM v){ \
SQFloat f; \
sq_decreaseops(v,num_ops); \
sq_getfloat(v,2,&f); \
sq_pushfloat(v,(SQFloat)_funcname(f)); \
return 1; \
}
#define TWO_ARGS_FUNC(_funcname, num_ops) static SQInteger math_##_funcname(HSQUIRRELVM v){ \
SQFloat p1,p2; \
sq_decreaseops(v,num_ops); \
sq_getfloat(v,2,&p1); \
sq_getfloat(v,3,&p2); \
sq_pushfloat(v,(SQFloat)_funcname(p1,p2)); \
return 1; \
}
#ifdef EXPORT_DEFAULT_SQUIRREL_FUNCTIONS
static SQInteger math_srand(HSQUIRRELVM v)
{
SQInteger i;
if(SQ_FAILED(sq_getinteger(v,2,&i)))
return sq_throwerror(v,_SC("invalid param"));
srand((unsigned int)i);
return 0;
}
static SQInteger math_rand(HSQUIRRELVM v)
{
sq_pushinteger(v,rand());
return 1;
}
#endif /* EXPORT_DEFAULT_SQUIRREL_FUNCTIONS */
static SQInteger math_abs(HSQUIRRELVM v)
{
SQInteger n;
sq_getinteger(v,2,&n);
sq_pushinteger(v,(SQInteger)abs((int)n));
return 1;
}
SINGLE_ARG_FUNC(sqrt, 100)
SINGLE_ARG_FUNC(fabs, 1)
SINGLE_ARG_FUNC(sin, 100)
SINGLE_ARG_FUNC(cos, 100)
SINGLE_ARG_FUNC(asin, 100)
SINGLE_ARG_FUNC(acos, 100)
SINGLE_ARG_FUNC(log, 100)
SINGLE_ARG_FUNC(log10, 100)
SINGLE_ARG_FUNC(tan, 100)
SINGLE_ARG_FUNC(atan, 100)
TWO_ARGS_FUNC(atan2, 100)
TWO_ARGS_FUNC(pow, 100)
SINGLE_ARG_FUNC(floor, 1)
SINGLE_ARG_FUNC(ceil, 1)
SINGLE_ARG_FUNC(exp, 100)
#define _DECL_FUNC(name,nparams,tycheck) {_SC(#name),math_##name,nparams,tycheck}
static SQRegFunction mathlib_funcs[] = {
_DECL_FUNC(sqrt,2,_SC(".n")),
_DECL_FUNC(sin,2,_SC(".n")),
_DECL_FUNC(cos,2,_SC(".n")),
_DECL_FUNC(asin,2,_SC(".n")),
_DECL_FUNC(acos,2,_SC(".n")),
_DECL_FUNC(log,2,_SC(".n")),
_DECL_FUNC(log10,2,_SC(".n")),
_DECL_FUNC(tan,2,_SC(".n")),
_DECL_FUNC(atan,2,_SC(".n")),
_DECL_FUNC(atan2,3,_SC(".nn")),
_DECL_FUNC(pow,3,_SC(".nn")),
_DECL_FUNC(floor,2,_SC(".n")),
_DECL_FUNC(ceil,2,_SC(".n")),
_DECL_FUNC(exp,2,_SC(".n")),
#ifdef EXPORT_DEFAULT_SQUIRREL_FUNCTIONS
_DECL_FUNC(srand,2,_SC(".n")),
_DECL_FUNC(rand,1,NULL),
#endif /* EXPORT_DEFAULT_SQUIRREL_FUNCTIONS */
_DECL_FUNC(fabs,2,_SC(".n")),
_DECL_FUNC(abs,2,_SC(".n")),
{0,0,0,0},
};
#ifndef M_PI
#define M_PI (3.14159265358979323846)
#endif
SQRESULT sqstd_register_mathlib(HSQUIRRELVM v)
{
SQInteger i=0;
while(mathlib_funcs[i].name!=0) {
sq_pushstring(v,mathlib_funcs[i].name,-1);
sq_newclosure(v,mathlib_funcs[i].f,0);
sq_setparamscheck(v,mathlib_funcs[i].nparamscheck,mathlib_funcs[i].typemask);
sq_setnativeclosurename(v,-1,mathlib_funcs[i].name);
sq_createslot(v,-3);
i++;
}
#ifdef EXPORT_DEFAULT_SQUIRREL_FUNCTIONS
sq_pushstring(v,_SC("RAND_MAX"),-1);
sq_pushinteger(v,RAND_MAX);
sq_createslot(v,-3);
#endif /* EXPORT_DEFAULT_SQUIRREL_FUNCTIONS */
sq_pushstring(v,_SC("PI"),-1);
sq_pushfloat(v,(SQFloat)M_PI);
sq_createslot(v,-3);
return SQ_OK;
}
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