int Itime (int argc, lvar_t *argv) {
#ifndef FEATURE_MS
struct timeval tz;
gettimeofday (&tz, NULL);
rtno = Treal (tz.tv_sec + tz.tv_usec / 1000000.0);
#else
rtno = Treal (0);
#endif
return L_SUCCESS;
}
int Irandom (int argc, lvar_t *argv) {
rtno = Treal (
(Tgetnumber (argv[0].o) *
(lrand48 () & 0xffff)) / (double) (0xffff)
);
return L_SUCCESS;
}
int Iatan (int argc, lvar_t *argv) {
double x, y;
y = Tgetnumber (argv[0].o), x = Tgetnumber (argv[1].o);
rtno = Treal (180 * atan2 (y, x) / M_PI);
return L_SUCCESS;
}
static Tobj arithop(num_tt * lnum, Ctype_t op, num_tt * rnum)
{
double d1, d2, d3;
if (!rnum && op != C_UMINUS)
return NULL;
if (lnum->type == C_INTEGER)
d1 = lnum->u.i;
else if (lnum->type == C_REAL)
d1 = lnum->u.d;
else if (!lnum->u.no)
return NULL;
else if (Tgettype(lnum->u.no) == T_INTEGER)
d1 = Tgetinteger(lnum->u.no);
else if (Tgettype(lnum->u.no) == T_REAL)
d1 = Tgetreal(lnum->u.no);
else
return NULL;
if (op == C_UMINUS) {
d3 = -d1;
goto result;
}
if (rnum->type == C_INTEGER)
d2 = rnum->u.i;
else if (rnum->type == C_REAL)
d2 = rnum->u.d;
else if (!rnum->u.no)
return NULL;
else if (Tgettype(rnum->u.no) == T_INTEGER)
d2 = Tgetinteger(rnum->u.no);
else if (Tgettype(rnum->u.no) == T_REAL)
d2 = Tgetreal(rnum->u.no);
else
return NULL;
switch (op) {
case C_PLUS:
d3 = d1 + d2;
break;
case C_MINUS:
d3 = d1 - d2;
break;
case C_MUL:
d3 = d1 * d2;
break;
case C_DIV:
d3 = d1 / d2;
break;
case C_MOD:
d3 = (long) d1 % (long) d2;
break;
}
result:
if (d3 == (double) (long) d3)
return Tinteger((long) d3);
return Treal(d3);
}
static Tobj eeval(Tobj co, int ci)
{
Tobj v1o, v2o, v3o;
Ttype_t ttype;
Ctype_t ctype;
tnk_t tnk;
num_tt lnum, rnum;
long m1, m2;
int i1, i2, res;
tailrec:
errdo = TRUE;
v1o = NULL;
ctype = TCgettype(co, ci);
switch (ctype) {
case C_ASSIGN:
i1 = TCgetfp(co, ci);
if ((v1o = eeval(co, TCgetnext(co, i1))) == NULL) {
err(ERRNORHS, ERR4, co, TCgetnext(co, i1));
return NULL;
}
m1 = Mpushmark(v1o);
res = getvar(co, i1, &tnk);
Mpopmark(m1);
if (res == -1) {
err(ERRNOLHS, ERR3, co, i1);
return NULL;
}
setvar(tnk, v1o);
return v1o;
case C_OR:
case C_AND:
case C_NOT:
i1 = TCgetfp(co, ci);
if ((v1o = eeval(co, i1)) == NULL)
err(ERRNORHS, ERR4, co, i1);
switch (ctype) {
case C_OR:
if (boolop(v1o) == TRUE)
return Ttrue;
if ((v1o = eeval(co, TCgetnext(co, i1))) == NULL)
err(ERRNORHS, ERR4, co, TCgetnext(co, i1));
return (boolop(v1o) == TRUE) ? Ttrue : Tfalse;
case C_AND:
if (boolop(v1o) == FALSE)
return Tfalse;
if ((v1o = eeval(co, TCgetnext(co, i1))) == NULL)
err(ERRNORHS, ERR4, co, TCgetnext(co, i1));
return (boolop(v1o) == FALSE) ? Tfalse : Ttrue;
case C_NOT:
return (boolop(v1o) == TRUE) ? Tfalse : Ttrue;
}
/* NOT REACHED */
return Tfalse;
case C_EQ:
case C_NE:
case C_LT:
case C_LE:
case C_GT:
case C_GE:
i1 = TCgetfp(co, ci);
if ((v1o = eeval(co, i1)) == NULL)
err(ERRNORHS, ERR4, co, i1);
else
m1 = Mpushmark(v1o);
if ((v2o = eeval(co, TCgetnext(co, i1))) == NULL)
err(ERRNORHS, ERR4, co, TCgetnext(co, i1));
if (v1o)
Mpopmark(m1);
return (orderop(v1o, ctype, v2o) == TRUE) ? Ttrue : Tfalse;
case C_PLUS:
case C_MINUS:
case C_MUL:
case C_DIV:
case C_MOD:
case C_UMINUS:
i1 = TCgetfp(co, ci);
if ((lnum.type = TCgettype(co, i1)) == C_INTEGER)
lnum.u.i = TCgetinteger(co, i1);
else if (lnum.type == C_REAL)
lnum.u.d = TCgetreal(co, i1);
else if ((lnum.u.no = eeval(co, i1)) == NULL) {
err(ERRNORHS, ERR4, co, i1);
return NULL;
}
if (ctype == C_UMINUS) {
if (!(v1o = arithop(&lnum, ctype, NULL)))
err(ERRNORHS, ERR4, co, ci);
return v1o;
}
if (lnum.type != C_INTEGER && lnum.type != C_REAL)
m1 = Mpushmark(lnum.u.no);
i1 = TCgetnext(co, i1);
if ((rnum.type = TCgettype(co, i1)) == C_INTEGER)
rnum.u.i = TCgetinteger(co, i1);
else if (rnum.type == C_REAL)
rnum.u.d = TCgetreal(co, i1);
else if ((rnum.u.no = eeval(co, i1)) == NULL)
err(ERRNORHS, ERR4, co, i1);
if (lnum.type != C_INTEGER && lnum.type != C_REAL)
Mpopmark(m1);
if (!(v1o = arithop(&lnum, ctype, &rnum)))
err(ERRNORHS, ERR4, co, ci);
return v1o;
case C_PEXPR:
ci = TCgetfp(co, ci);
goto tailrec;
case C_FCALL:
return efcall(co, ci);
case C_INTEGER:
return Tinteger(TCgetinteger(co, ci));
case C_REAL:
return Treal(TCgetreal(co, ci));
case C_STRING:
return Tstring(TCgetstring(co, ci));
case C_GVAR:
case C_LVAR:
case C_PVAR:
return getval(co, ci);
case C_FUNCTION:
return Tcode(TCgetaddr(co, ci), ci,
(int) TCgetinteger(co, TCgetfp(co, ci)));
case C_TCONS:
v1o = Ttable(0);
m1 = Mpushmark(v1o);
for (i1 = TCgetfp(co, ci); i1 != C_NULL;
i1 = TCgetnext(co, TCgetnext(co, i1))) {
if (!(v3o = eeval(co, TCgetnext(co, i1)))) {
err(ERRNORHS, ERR4, co, TCgetnext(co, i1));
continue;
}
m2 = Mpushmark(v3o);
if (!(v2o = eeval(co, i1))) {
err(ERRNOLHS, ERR3, co, i1);
Mpopmark(m2);
continue;
}
ttype = Tgettype(v2o);
if (ttype == T_INTEGER || ttype == T_REAL || ttype == T_STRING)
Tinso(v1o, v2o, v3o);
else
err(ERRNOLHS, ERR1, co, i1);
}
Mpopmark(m1);
return v1o;
case C_STMT:
for (i1 = TCgetfp(co, ci); i1 != C_NULL;)
if ((i2 = TCgetnext(co, i1)) != C_NULL) {
eeval(co, i1);
i1 = i2;
} else {
ci = i1;
goto tailrec;
}
/* NOT REACHED */
break;
case C_IF:
i1 = TCgetfp(co, ci);
if (!(v1o = eeval(co, i1)))
err(ERRNORHS, ERR5, co, i1);
if (boolop(v1o) == TRUE) {
ci = TCgetnext(co, i1);
goto tailrec;
} else if ((ci = TCgetnext(co, TCgetnext(co, i1))) != C_NULL)
goto tailrec;
break;
case C_WHILE:
ewhilest(co, ci);
break;
case C_FOR:
eforst(co, ci);
break;
case C_FORIN:
eforinst(co, ci);
break;
case C_BREAK:
pljtype = PLJ_BREAK;
longjmp(*pljbufp1, 1);
/* NOT REACHED */
break;
case C_CONTINUE:
pljtype = PLJ_CONTINUE;
longjmp(*pljbufp1, 1);
/* NOT REACHED */
break;
case C_RETURN:
if ((i1 = TCgetfp(co, ci)) != C_NULL)
rtno = eeval(co, i1);
pljtype = PLJ_RETURN;
longjmp(*pljbufp2, 1);
/* NOT REACHED */
break;
default:
panic1(POS, "eeval", "unknown program token type %d", ctype);
}
return v1o;
}
int Iston (int argc, lvar_t *argv) {
rtno = Treal ((double) atof (Tgetstring (argv[0].o)));
return L_SUCCESS;
}
int Isqrt (int argc, lvar_t *argv) {
rtno = Treal (sqrt (Tgetnumber (argv[0].o)));
return L_SUCCESS;
}
int Isin (int argc, lvar_t *argv) {
rtno = Treal (sin (M_PI * Tgetnumber (argv[0].o) / 180.0));
return L_SUCCESS;
}
