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