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#include <u.h>
#include <libc.h>
#include <geometry.h>
#include "dat.h"
#include "fns.h"
#include "y.tab.h"
static char *types[] = {
"double",
"point",
"vector",
"normal",
"quat",
};
static char *ctypes[] = {
"double",
"Point3",
"Point3",
"Point3",
"Quaternion",
};
static Const consts[] = {
"π", 3.14159265358979323846,
"e", 2.71828182845904523536,
"γ", 0.57721566490153286060,
"DEG", 57.29577951308232087680,
"Φ", 1.61803398874989484820,
};
static Builtin builtins[] = {
"sin", sin,
"cos", cos,
"atan", atan,
"atan2", atan2,
"log", log,
"log10", log10,
"exp", exp,
"sqrt", sqrt,
"int", round,
"abs", fabs,
};
double
round(double n)
{
return floor(n + 0.5);
}
int
lookuptype(char *s)
{
int i;
for(i = 0; i < nelem(types); i++)
if(strcmp(s, types[i]) == 0)
return i;
return -1;
}
char *
typename(int t)
{
if(t >= 0 && t < nelem(types))
return types[t];
return nil;
}
char *
ctypename(int t)
{
if(t >= 0 && t < nelem(ctypes))
return ctypes[t];
return nil;
}
void
init(void)
{
Symbol *s;
int i;
for(i = 0; i < nelem(consts); i++)
install(consts[i].name, CONST, consts[i].val);
for(i = 0; i < nelem(builtins); i++){
s = install(builtins[i].name, BLTIN, 0);
s->u.fn = builtins[i].fn;
}
}
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