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function.c
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function.c
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#include <stdlib.h>
#include <math.h>
#include <float.h>
#include "npl.h"
void
defoperator(char *name, int (*func)(int, int,int), int weight, int spec,
int opt)
{
int atom, old_weight, old_spec, new_weight, new_spec, ex_spec;
if (opt == 0)
atom = makeatom(name, OPE);
else if (opt == 1)
atom = makeatom(name, SYS);
else
atom = makeatom(name, USER);
old_spec = GET_OPT(atom);
if (old_spec == FX ||
old_spec == FY ||
old_spec == XFX ||
old_spec == YFX || old_spec == XFY || old_spec == XF
|| old_spec == YF)
old_weight = GET_CDR(atom);
else if (spec == FX || spec == FY || spec == XF || spec == YF)
old_weight = get_1st_weight(atom);
else
old_weight = get_2nd_weight(atom);
if (old_spec == NIL) {
if (func != NIL)
SET_SUBR(atom, func);
SET_CDR(atom, weight);
SET_OPT(atom, spec);
weight = makeint(weight);
spec = makespec(spec);
op_list = listcons(list3(weight, spec, atom), op_list);
return;
} else {
new_weight = 0;
new_spec = NIL;
if (old_spec == XFX) {
if (spec == FX) {
new_spec = FX_XFX;
new_weight = weight * 10000 + old_weight;
} else if (spec == FY) {
new_spec = FY_XFX;
new_weight = weight * 10000 + old_weight;
} else {
new_spec = spec;
new_weight = weight;
}
} else if (old_spec == YFX) {
if (spec == FX) {
new_spec = FX_YFX;
new_weight = weight * 10000 + old_weight;
} else if (spec == FY) {
new_spec = FY_YFX;
new_weight = weight * 10000 + old_weight;
} else {
new_spec = spec;
new_weight = weight;
}
} else if (old_spec == XFY) {
if (spec == FX) {
new_spec = FX_XFY;
new_weight = weight * 10000 + old_weight;
} else if (spec == FY) {
new_spec = FY_XFY;
new_weight = weight * 10000 + old_weight;
} else {
new_spec = spec;
new_weight = weight;
}
} else if (old_spec == XF) {
if (spec == FX) {
new_weight = weight * 10000 + old_weight;
new_spec = FX_XF;
} else if (spec == FY) {
new_weight = weight * 10000 + old_weight;
new_spec = FY_XF;
} else {
new_spec = spec;
new_weight = weight;
}
} else if (old_spec == YF) {
if (spec == FX) {
new_weight = weight * 10000 + old_weight;
new_spec = FX_YF;
} else if (spec == FY) {
new_weight = weight * 10000 + old_weight;
new_spec = FY_YF;
} else {
new_spec = spec;
new_weight = weight;
}
} else if (old_spec == FX) {
if (spec == XFX) {
new_weight = old_weight * 10000 + weight;
new_spec = FX_XFX;
} else if (spec == YFX) {
new_weight = old_weight * 10000 + weight;
new_spec = FX_YFX;
} else if (spec == XFY) {
new_weight = old_weight * 10000 + weight;
new_spec = FX_XFY;
} else {
new_spec = spec;
new_weight = weight;
}
} else if (old_spec == FY) {
if (spec == XFX) {
new_weight = old_weight * 10000 + weight;
new_spec = FY_XFX;
} else if (spec == YFX) {
new_weight = old_weight * 10000 + weight;
new_spec = FY_YFX;
} else if (spec == XFY) {
new_weight = old_weight * 10000 + weight;
new_spec = FY_XFY;
} else {
new_spec = spec;
new_weight = weight;
}
} else if (old_spec == FX_XFX) {
if (spec == FX) {
new_spec = FX_XFX;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == FY) {
new_spec = FY_XFX;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == XFX) {
new_spec = FX_XFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YFX) {
new_spec = FX_YFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XFY) {
new_spec = FX_XFY;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XF) {
new_spec = FX_XF;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YF) {
new_spec = FX_YF;
new_weight = (old_weight / 10000) * 10000 + weight;
}
} else if (old_spec == FX_YFX) {
if (spec == FX) {
new_spec = FX_YFX;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == FY) {
new_spec = FY_YFX;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == XFX) {
new_spec = FX_XFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YFX) {
new_spec = FX_YFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XFY) {
new_spec = FX_XFY;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XF) {
new_spec = FX_XF;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YF) {
new_spec = FX_YF;
new_weight = (old_weight / 10000) * 10000 + weight;
}
} else if (old_spec == FX_XFY) {
if (spec == FX) {
new_spec = FX_XFY;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == FY) {
new_spec = FY_XFY;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == XFX) {
new_spec = FX_XFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YFX) {
new_spec = FX_YFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XFY) {
new_spec = FX_XFY;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XF) {
new_spec = FX_XF;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YF) {
new_spec = FX_YF;
new_weight = (old_weight / 10000) * 10000 + weight;
}
} else if (old_spec == FY_XFX) {
if (spec == FX) {
new_spec = FX_XFX;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == FY) {
new_spec = FY_XFX;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == XFX) {
new_spec = FY_XFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YFX) {
new_spec = FY_YFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XFY) {
new_spec = FY_XFY;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XF) {
new_spec = FY_XF;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YF) {
new_spec = FY_YF;
new_weight = (old_weight / 10000) * 10000 + weight;
}
} else if (old_spec == FY_YFX) {
if (spec == FX) {
new_spec = FX_YFX;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == FY) {
new_spec = FY_YFX;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == XFX) {
new_spec = FY_XFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YFX) {
new_spec = FY_YFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XFY) {
new_spec = FY_XFY;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XF) {
new_spec = FY_XF;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YF) {
new_spec = FY_YF;
new_weight = (old_weight / 10000) * 10000 + weight;
}
} else if (old_spec == FY_XFY) {
if (spec == FX) {
new_spec = FX_XFY;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == FY) {
new_spec = FY_XFY;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == XFX) {
new_spec = FY_XFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YFX) {
new_spec = FY_YFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XFY) {
new_spec = FY_XFY;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XF) {
new_spec = FY_XF;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YF) {
new_spec = FY_YF;
new_weight = (old_weight / 10000) * 10000 + weight;
}
} else if (old_spec == FX_XF) {
if (spec == FX) {
new_spec = FX_XF;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == FY) {
new_spec = FY_XF;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == XFX) {
new_spec = FX_XFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YFX) {
new_spec = FX_YFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XFY) {
new_spec = FX_XFY;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XF) {
new_spec = FX_XF;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YF) {
new_spec = FX_YF;
new_weight = (old_weight / 10000) * 10000 + weight;
}
} else if (old_spec == FX_YF) {
if (spec == FX) {
new_spec = FX_YF;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == FY) {
new_spec = FY_YF;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == XFX) {
new_spec = FX_XFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YFX) {
new_spec = FX_YFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XFY) {
new_spec = FX_XFY;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XF) {
new_spec = FX_XF;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YF) {
new_spec = FX_YF;
new_weight = (old_weight / 10000) * 10000 + weight;
}
} else if (old_spec == FY_XF) {
if (spec == FX) {
new_spec = FX_XF;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == FY) {
new_spec = FY_XF;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == XFX) {
new_spec = FY_XFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YFX) {
new_spec = FY_YFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XFY) {
new_spec = FY_XFY;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XF) {
new_spec = FY_XF;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YF) {
new_spec = FX_YF;
new_weight = (old_weight / 10000) * 10000 + weight;
}
} else if (old_spec == FY_YF) {
if (spec == FX) {
new_spec = FX_YF;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == FY) {
new_spec = FY_YF;
new_weight = weight * 10000 + old_weight % 10000;
} else if (spec == XFX) {
new_spec = FY_XFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YFX) {
new_spec = FY_YFX;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XFY) {
new_spec = FY_XFY;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == XF) {
new_spec = FY_XF;
new_weight = (old_weight / 10000) * 10000 + weight;
} else if (spec == YF) {
new_spec = FY_YF;
new_weight = (old_weight / 10000) * 10000 + weight;
}
}
if (func != NIL)
SET_SUBR(atom, func);
SET_CDR(atom, new_weight);
SET_OPT(atom, new_spec);
ex_spec = makeexspec(old_spec, spec);
weight = makeint(weight);
spec = makespec(spec);
op_list = listremove3(NIL, ex_spec, atom, op_list);
op_list = cons(list3(weight, spec, atom), op_list);
return;
}
}
void definfix(char *name, int (*func)(int, int, int), int weight, int spec)
{
int atom;
atom = makeatom(name, SYS);
SET_SUBR(atom, func);
SET_CDR(atom, weight);
SET_OPT(atom, spec);
weight = makeint(weight);
spec = makespec(spec);
op_list = cons(list3(weight, spec, atom), op_list);
builtins = cons(list3(SLASH, atom, makeint(2)), builtins);
return;
}
void defbuiltin(char *name, int (*func)(int, int, int), int arity)
{
int atom;
atom = makeatom(name, SYS);
SET_SUBR(atom, func);
if (arity > 2 && structurep(arity))
while (!nullp(arity)) {
builtins =
cons(list3(SLASH, atom, makeint(car(arity))), builtins);
arity = cdr(arity);
} else if (arity != -1)
builtins = cons(list3(SLASH, atom, makeint(arity)), builtins);
return;
}
void defcompiled(char *name, int (*func)(int, int, int), int arity)
{
int atom;
atom = makeatom(name, COMP);
SET_SUBR(atom, func);
if (arity > 2 && structurep(arity))
while (!nullp(arity)) {
builtins =
cons(list3(SLASH, atom, makeint(car(arity))), builtins);
arity = cdr(arity);
} else if (arity != -1)
builtins = cons(list3(SLASH, atom, makeint(arity)), builtins);
return;
}
void definfixcomp(char *name, int (*func)(int, int, int), int weight,
int spec)
{
int atom;
atom = makeatom(name, COMP);
SET_SUBR(atom, func);
SET_CDR(atom, weight);
SET_OPT(atom, spec);
weight = makeint(weight);
spec = makespec(spec);
op_list = cons(list3(weight, spec, atom), op_list);
return;
}
void initoperator(void)
{
defoperator(":-", o_define, 1200, XFX, 0);
defoperator(":-", o_define, 1200, FX, 0);
defoperator("-->", o_dcg, 1200, XFX, 0);
defoperator("?-", o_ignore, 1200, FX, 0);
defoperator(",", o_ignore, 1000, XFY, 0);
defoperator(";", o_ignore, 1100, XFY, 0);
defoperator(":", o_ignore, 50, XFX, 0);
defoperator(".", o_cons, 50, FX, 0);
defoperator("+", f_plus, 500, YFX, 0);
defoperator("+", f_plus, 200, FY, 0);
defoperator("-", f_minus, 500, YFX, 0);
defoperator("-", f_minus, 200, FY, 0);
defoperator("*", f_mult, 400, YFX, 0);
defoperator("^", f_expt, 200, XFY, 0);
defoperator("/", f_divide, 400, YFX, 0);
defoperator("//", f_div, 400, YFX, 0);
defoperator("mod", f_mod, 400, YFX, 0);
defoperator("<<", f_leftshift, 400, YFX, 0);
defoperator(">>", f_rightshift, 400, YFX, 0);
defoperator("/\\", f_logicaland, 500, YFX, 0);
defoperator("\\/", f_logicalor, 500, YFX, 0);
defoperator("\\", f_complement, 200, FY, 0);
return;
}
//function
int eval(int x, int th)
{
int function, arg1, arg2;
int result[3];
if (nullp(x))
return (NIL);
else if (integerp(x))
return (x);
else if (floatp(x))
return (x);
else if (longnump(x))
return (x);
else if (bignump(x))
return (x);
else if (variablep(x))
return (deref(x, th));
else if (!structurep(x)) {
if (eqp(x, makefunc("pi")))
return (makeflt(3.14159265358979323846));
else if (eqp(x, makefunc("random")))
return (f_random(NIL,th));
else
error(EVALUATION_ERR, "eval ", x,th);
} else if (eqp(car(x), makeatom("abs", FUNC))) {
if (length(x) != 2)
error(ARITY_ERR, "abs ", x,th);
evalterm(x, result, th);
arg1 = result[1];
return (f_abs(arg1,th));
} else if (eqp(car(x), makeatom("sin", FUNC))) {
if (length(x) != 2)
error(ARITY_ERR, "sin ", x,th);
evalterm(x, result, th);
arg1 = result[1];
return (f_sin(arg1,th));
} else if (eqp(car(x), makeatom("asin", FUNC))) {
if (length(x) != 2)
error(ARITY_ERR, "asin ", x,th);
evalterm(x, result, th);
arg1 = result[1];
return (f_asin(arg1,th));
} else if (eqp(car(x), makeatom("cos", FUNC))) {
if (length(x) != 2)
error(ARITY_ERR, "cos ", x,th);
evalterm(x, result, th);
arg1 = result[1];
return (f_cos(arg1,th));
} else if (eqp(car(x), makeatom("acos", FUNC))) {
if (length(x) != 2)
error(ARITY_ERR, "acos ", x,th);
evalterm(x, result, th);
arg1 = result[1];
return (f_acos(arg1,th));
} else if (eqp(car(x), makeatom("tan", FUNC))) {
if (length(x) != 2)
error(ARITY_ERR, "tan ", x,th);
evalterm(x, result, th);
arg1 = result[1];
return (f_tan(arg1,th));
} else if (eqp(car(x), makeatom("atan", FUNC))) {
if (length(x) != 2)
error(ARITY_ERR, "atan ", x,th);
evalterm(x, result, th);
arg1 = result[1];
return (f_atan(arg1,th));
} else if (eqp(car(x), makeatom("exp", FUNC))) {
if (length(x) != 2)
error(ARITY_ERR, "exp ", x,th);
evalterm(x, result, th);
arg1 = result[1];
return (f_exp(arg1,th));
} else if (eqp(car(x), makeatom("ln", FUNC))) {
if (length(x) != 2)
error(ARITY_ERR, "ln ", x,th);
evalterm(x, result, th);
arg1 = result[1];
return (f_ln(arg1,th));
} else if (eqp(car(x), makeatom("log", FUNC))) {
if (length(x) != 2)
error(ARITY_ERR, "log ", x,th);
evalterm(x, result, th);
arg1 = result[1];
return (f_log(arg1,th));
} else if (eqp(car(x), makeatom("sqrt", FUNC))) {
if (length(x) != 2)
error(ARITY_ERR, "sqrt ", x,th);
evalterm(x, result, th);
arg1 = result[1];
return (f_sqrt(arg1,th));
} else if (eqp(car(x), makeatom("round", FUNC))) {
if (length(x) != 3)
error(ARITY_ERR, "round ", x,th);
evalterm(x, result, th);
arg1 = result[1];
arg2 = result[2];
return (f_round(arg1, arg2,th));
} else if (eqp(car(x), makeatom("integer", SYS))) {
if (length(x) != 2)
error(ARITY_ERR, "integer ", x,th);
evalterm(x, result, th);
arg1 = result[1];
return (f_integer(arg1,th));
} else if (eqp(car(x), makeatom("float", SYS))) {
if (length(x) != 2)
error(ARITY_ERR, "float ", x,th);
evalterm(x, result, th);
arg1 = result[1];
return (f_float(arg1,th));
} else if (eqp(car(x), makeatom("randi", FUNC))) {
if (length(x) != 2)
error(ARITY_ERR, "randi ", x,th);
evalterm(x, result, th);
arg1 = result[1];
return (f_randi(arg1,th));
} else if (structurep(x) && operatorp(car(x))) {
evalterm(x, result, th);
function = result[0];
arg1 = result[1];
arg2 = result[2];
return ((GET_SUBR(function)) (arg1, arg2, th));
}
error(EVALUATION_ERR, "eval ", x,th);
return (NIL);
}
void evalterm(int x, int result[3], int th)
{
result[0] = car(x);
result[1] = eval(deref(cadr(x), th), th);
result[2] = eval(deref(caddr(x), th), th);
return;
}
int f_plus(int x, int y, int th)
{
if (nullp(y))
y = makeint(0);
if (wide_variable_p(x))
error(INSTANTATION_ERR, "+ ", x,th);
if (wide_variable_p(y))
error(INSTANTATION_ERR, "+ ", y,th);
if (!numberp(x))
error(NOT_NUM, "+ ", x,th);
if (!numberp(y))
error(NOT_NUM, "+ ", y,th);
return (plus(x, y, th));
}
int f_minus(int x, int y, int th)
{
if (nullp(y)) {
y = x;
x = makeint(0);
}
if (wide_variable_p(x))
error(INSTANTATION_ERR, "- ", x,th);
if (wide_variable_p(y))
error(INSTANTATION_ERR, "- ", y,th);
if (!numberp(x))
error(NOT_NUM, "- ", x,th);
if (!numberp(y))
error(NOT_NUM, "- ", y,th);
if (!nullp(y))
return (minus(x, y,th));
else
return (mult(x, makeint(-1),th));
}
int f_mult(int x, int y, int th)
{
if (wide_variable_p(x))
error(INSTANTATION_ERR, "* ", x,th);
if (wide_variable_p(y))
error(INSTANTATION_ERR, "* ", y,th);
if (!numberp(x))
error(NOT_NUM, "* ", x,th);
if (!numberp(y))
error(NOT_NUM, "* ", y,th);
return (mult(x, y,th));
}
int f_divide(int x, int y, int th)
{
if (wide_variable_p(x))
error(INSTANTATION_ERR, "/ ", x,th);
if (wide_variable_p(y))
error(INSTANTATION_ERR, "/ ", y,th);
if (!numberp(x))
error(NOT_NUM, "/ ", x,th);
if (!numberp(y))
error(NOT_NUM, "/ ", y,th);
if (zerop(y))
error(DIV_ZERO, "/", NIL,th);
return (exact_to_inexact(divide(x, y,th)));
}
int f_div(int x, int y, int th)
{
int q;
if (wide_variable_p(x))
error(INSTANTATION_ERR, "/ ", x,th);
if (wide_variable_p(y))
error(INSTANTATION_ERR, "/ ", y,th);
if (!numberp(x))
error(NOT_NUM, "/ ", x,th);
if (!numberp(y))
error(NOT_NUM, "/ ", y,th);
if (zerop(y))
error(DIV_ZERO, "/", NIL,th);
q = quotient(x, y, th);
return (q);
}
int f_mod(int x, int y, int th)
{
int res;
if (wide_variable_p(x))
error(INSTANTATION_ERR, "mod ", x,th);
if (wide_variable_p(y))
error(INSTANTATION_ERR, "mod ", y,th);
if (!numberp(x))
error(NOT_NUM, "mod ", x,th);
if (!numberp(y))
error(NOT_NUM, "mod ", y,th);
if (y == makeint(0))
error(DIV_ZERO, "mod", y,th);
if (!wide_integer_p(x))
error(NOT_INT, "mod ", x,th);
if (!wide_integer_p(y))
error(NOT_INT, "mod ", y,th);
if ((positivep(x) && positivep(y)) || (negativep(x) && negativep(y)))
res = s_remainder(x, y,th);
else if ((positivep(x) && negativep(y)))
res = plus(y, s_remainder(x, y,th),th);
else if (negativep(x) && positivep(y))
res = mult(makeint(-1), plus(y, s_remainder(x, y,th),th),th);
else
res = s_remainder(x, y,th);
return (res);
}
int f_expt(int x, int y, int th)
{
double dx, dy, dz;
if (wide_variable_p(x))
error(INSTANTATION_ERR, "^ ", x,th);
if (wide_variable_p(y))
error(INSTANTATION_ERR, "^ ", y,th);
if (negativep(x) && !wide_integer_p(y))
error(EVALUATION_ERR, "^ ", y,th);
if (!numberp(x))
error(NOT_NUM, "^ ", x,th);
if (!numberp(y))
error(NOT_NUM, "^ ", y,th);
if (floatp(x) && GET_FLT(x) >= DBL_MAX)
error(EVALUATION_ERR, "^ ", x,th);
if (floatp(x) && (fabs(GET_FLT(x)) <= DBL_MIN && GET_FLT(x) != 0))
error(EVALUATION_ERR, "^ ", x,th);
if (bignump(x) && (longnump(y) || bignump(y)))
error(EXPONENT_ERR, "^ ", y,th);
if ((integerp(x) || longnump(x) || bignump(x)) && integerp(y)
&& GET_INT(y) == 0)
return (makeint(1));
if ((integerp(x) || longnump(x) || bignump(x))
&& (integerp(y) && GET_INT(y) > 0))
return (expt(x, GET_INT(y),th));
if ((integerp(x) || floatp(x)) && (integerp(y) || floatp(y))) {
x = exact_to_inexact(x);
y = exact_to_inexact(y);
dx = GET_FLT(x);
dy = GET_FLT(y);
dz = pow(dx, dy);
return (makeflt(dz));
}
if (integerp(x) && (integerp(y) || longnump(y) || bignump(y))) {
if (GET_INT(x) == 1)
return (x);
else if (GET_INT(x) == 0)
return (x);
else if (GET_INT(x) == -1) {
if (zerop(s_remainder(y, makeint(2),th)))
return (makeint(1));
else
return (x);
}
}
if (floatp(x) && (longnump(y) || bignump(y))) {
if (GET_FLT(x) == 1.0)
return (x);
else if (GET_FLT(x) == 0.0)
return (x);
else if (GET_FLT(x) == -1.0) {
if (zerop(s_remainder(y, makeint(2),th)))
return (makeflt(1.0));
else
return (x);
}
}
if (longnump(x) && integerp(y)) {
if (GET_INT(y) == 1) {
dx = GET_FLT(exact_to_inexact(x));
dy = dx;
return (makeflt(dy));
} else if (GET_INT(y) == 2) {
dx = GET_FLT(exact_to_inexact(x));
dy = dx * dx;
return (makeflt(dy));
} else if (GET_INT(y) == -1) {
dx = GET_FLT(exact_to_inexact(x));
dy = 1.0 / dx;
return (makeflt(dy));
} else if (GET_INT(y) == -2) {
dx = GET_FLT(exact_to_inexact(x));
dy = 1.0 / (dx * dx);
return (makeflt(dy));
}
}
if (longnump(x) && floatp(y)) {
if (GET_FLT(y) == 0.0) {
return (makeflt(1.0));
} else if (GET_FLT(y) == 1.0) {
dx = GET_FLT(exact_to_inexact(x));
dy = dx;
return (makeflt(dy));
} else if (GET_FLT(y) == 2.0) {
dx = GET_FLT(exact_to_inexact(x));
dy = dx * dx;
return (makeflt(dy));
} else if (GET_FLT(y) == -1.0) {
dx = GET_FLT(exact_to_inexact(x));
dy = 1.0 / dx;
return (makeflt(dy));
} else if (GET_FLT(y) == -2.0) {
dx = GET_FLT(exact_to_inexact(x));
dy = 1.0 / (dx * dx);
return (makeflt(dy));
}
}
return (UNDEF);
}
//x is cell address, y is integer of C
int expt(int x, int y, int th)
{
int res, p;
res = makeint(1);
p = x;
while (y > 0) {
if ((y % 2) == 0) {
p = mult(p, p,th);
y = y / 2;
} else {
res = mult(res, p,th);
y = y - 1;
}
}
return (res);
}
int f_sqrt(int x, int th)
{
double dx;
if (wide_variable_p(x))
error(INSTANTATION_ERR, "sqrt ", x, th);
if (!numberp(x))
error(NOT_NUM, "sqrt ", x, th);
dx = sqrt(GET_FLT(exact_to_inexact(x)));
if (ceil(dx) == floor(dx) && dx < BIGNUM_BASE)
return (makeint((int) dx));
else
return (makeflt(dx));
}
int f_round(int x, int y, int th)
{
double dx;
int n, i;
if (wide_variable_p(x)) {
error(INSTANTATION_ERR, "round ", x, th);
}
if (!numberp(x)) {
error(NOT_NUM, "round ", x, th);
}
if (!integerp(y)) {
error(NOT_INT, "round ", y, th);
}
if (floatp(x)) {
dx = GET_FLT(x);
n = GET_INT(y);
for (i = 0; i < n; i++) {
dx = dx * 10;
}
dx = floor(dx);
for (i = 0; i < n; i++) {
dx = dx / 10;
}
return (makeflt(dx));
} else
return (x);
}
int f_leftshift(int x, int y, int th)
{
if (wide_variable_p(x))
error(INSTANTATION_ERR, "<< ", x,th);
if (wide_variable_p(y))
error(INSTANTATION_ERR, "<< ", y,th);
if (!integerp(x))
error(NOT_INT, "<<", x,th);
if (!integerp(y))
error(NOT_INT, "<<", y,th);
x = GET_INT(x);
y = GET_INT(y);
return (makeint(x << y));
}
int f_rightshift(int x, int y, int th)
{
if (wide_variable_p(x))
error(INSTANTATION_ERR, ">> ", x,th);
if (wide_variable_p(y))
error(INSTANTATION_ERR, ">> ", y,th);
if (!integerp(x))
error(NOT_INT, ">> ", x,th);
if (!integerp(y))
error(NOT_INT, ">> ", y,th);
x = GET_INT(x);
y = GET_INT(y);
return (makeint(x >> y));
}
int f_logicaland(int x, int y, int th)
{
if (wide_variable_p(x))
error(INSTANTATION_ERR, "/\\ ", x,th);
if (wide_variable_p(y))
error(INSTANTATION_ERR, "/\\ ", y,th);
if (!integerp(x))
error(NOT_INT, "/\\ ", x,th);
if (!integerp(y))
error(NOT_INT, "/\\ ", y,th);
x = GET_INT(x);
y = GET_INT(y);
return (makeint(x & y));
}
int f_logicalor(int x, int y, int th)
{
if (wide_variable_p(x))
error(INSTANTATION_ERR, "\\/ ", x,th);
if (wide_variable_p(y))
error(INSTANTATION_ERR, "\\/ ", y,th);
if (!integerp(x))
error(NOT_INT, "\\/ ", x,th);
if (!integerp(y))
error(NOT_INT, "\\/ ", y,th);
x = GET_INT(x);
y = GET_INT(y);
return (makeint(x | y));
}
int f_complement(int x, int y, int th)
{
if (wide_variable_p(x))
error(INSTANTATION_ERR, "\\ ", x,th);
if (!integerp(x))
error(NOT_INT, "\\ ", x,th);
x = GET_INT(x);
return (makeint(~x));
}
int f_abs(int x, int th)
{
if (wide_variable_p(x))
error(INSTANTATION_ERR, "abs ", x,th);
if (!numberp(x))
error(NOT_NUM, "abs ", x,th);
return (absolute(x,th));
}
int f_sin(int x, int th)
{
if (wide_variable_p(x))
error(INSTANTATION_ERR, "sin ", x,th);
if (!numberp(x))
error(NOT_NUM, "sin ", x,th);
return (makeflt(sin(GET_FLT(exact_to_inexact(x)))));
}
int f_asin(int x, int th)
{
if (wide_variable_p(x))
error(INSTANTATION_ERR, "asin ", x,th);
if (!numberp(x))
error(NOT_NUM, "asin ", x,th);
return (makeflt(asin(GET_FLT(exact_to_inexact(x)))));
}
int f_cos(int x, int th)
{
if (wide_variable_p(x))