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first version for new API

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This commit is contained in:
Roberto Ierusalimschy
2000-08-28 14:57:04 -03:00
parent f1fd9b5c2c
commit 9fdf73bc9a
24 changed files with 1251 additions and 1405 deletions
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122
lmathlib.c
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@@ -1,5 +1,5 @@
/*
** $Id: lmathlib.c,v 1.25 2000/06/12 13:52:05 roberto Exp roberto $
** $Id: lmathlib.c,v 1.26 2000/08/09 19:16:57 roberto Exp roberto $
** Standard mathematical library
** See Copyright Notice in lua.h
*/
@@ -33,138 +33,169 @@
#endif
static void math_abs (lua_State *L) {
static int math_abs (lua_State *L) {
lua_pushnumber(L, fabs(luaL_check_number(L, 1)));
return 1;
}
static void math_sin (lua_State *L) {
static int math_sin (lua_State *L) {
lua_pushnumber(L, sin(TORAD(luaL_check_number(L, 1))));
return 1;
}
static void math_cos (lua_State *L) {
static int math_cos (lua_State *L) {
lua_pushnumber(L, cos(TORAD(luaL_check_number(L, 1))));
return 1;
}
static void math_tan (lua_State *L) {
static int math_tan (lua_State *L) {
lua_pushnumber(L, tan(TORAD(luaL_check_number(L, 1))));
return 1;
}
static void math_asin (lua_State *L) {
static int math_asin (lua_State *L) {
lua_pushnumber(L, FROMRAD(asin(luaL_check_number(L, 1))));
return 1;
}
static void math_acos (lua_State *L) {
static int math_acos (lua_State *L) {
lua_pushnumber(L, FROMRAD(acos(luaL_check_number(L, 1))));
return 1;
}
static void math_atan (lua_State *L) {
static int math_atan (lua_State *L) {
lua_pushnumber(L, FROMRAD(atan(luaL_check_number(L, 1))));
return 1;
}
static void math_atan2 (lua_State *L) {
static int math_atan2 (lua_State *L) {
lua_pushnumber(L, FROMRAD(atan2(luaL_check_number(L, 1), luaL_check_number(L, 2))));
return 1;
}
static void math_ceil (lua_State *L) {
static int math_ceil (lua_State *L) {
lua_pushnumber(L, ceil(luaL_check_number(L, 1)));
return 1;
}
static void math_floor (lua_State *L) {
static int math_floor (lua_State *L) {
lua_pushnumber(L, floor(luaL_check_number(L, 1)));
return 1;
}
static void math_mod (lua_State *L) {
static int math_mod (lua_State *L) {
lua_pushnumber(L, fmod(luaL_check_number(L, 1), luaL_check_number(L, 2)));
return 1;
}
static void math_sqrt (lua_State *L) {
static int math_sqrt (lua_State *L) {
lua_pushnumber(L, sqrt(luaL_check_number(L, 1)));
return 1;
}
static void math_pow (lua_State *L) {
static int math_pow (lua_State *L) {
lua_pushnumber(L, pow(luaL_check_number(L, 1), luaL_check_number(L, 2)));
return 1;
}
static void math_log (lua_State *L) {
static int math_log (lua_State *L) {
lua_pushnumber(L, log(luaL_check_number(L, 1)));
return 1;
}
static void math_log10 (lua_State *L) {
static int math_log10 (lua_State *L) {
lua_pushnumber(L, log10(luaL_check_number(L, 1)));
return 1;
}
static void math_exp (lua_State *L) {
static int math_exp (lua_State *L) {
lua_pushnumber(L, exp(luaL_check_number(L, 1)));
return 1;
}
static void math_deg (lua_State *L) {
static int math_deg (lua_State *L) {
lua_pushnumber(L, luaL_check_number(L, 1)/RADIANS_PER_DEGREE);
return 1;
}
static void math_rad (lua_State *L) {
static int math_rad (lua_State *L) {
lua_pushnumber(L, luaL_check_number(L, 1)*RADIANS_PER_DEGREE);
return 1;
}
static void math_frexp (lua_State *L) {
static int math_frexp (lua_State *L) {
int e;
lua_pushnumber(L, frexp(luaL_check_number(L, 1), &e));
lua_pushnumber(L, e);
return 2;
}
static void math_ldexp (lua_State *L) {
static int math_ldexp (lua_State *L) {
lua_pushnumber(L, ldexp(luaL_check_number(L, 1), luaL_check_int(L, 2)));
return 1;
}
static void math_min (lua_State *L) {
int i = 1;
double dmin = luaL_check_number(L, i);
while (lua_getparam(L, ++i) != LUA_NOOBJECT) {
static int math_min (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
double dmin = luaL_check_number(L, 1);
int i;
for (i=2; i<=n; i++) {
double d = luaL_check_number(L, i);
if (d < dmin)
dmin = d;
}
lua_pushnumber(L, dmin);
return 1;
}
static void math_max (lua_State *L) {
int i = 1;
double dmax = luaL_check_number(L, i);
while (lua_getparam(L, ++i) != LUA_NOOBJECT) {
static int math_max (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
double dmax = luaL_check_number(L, 1);
int i;
for (i=2; i<=n; i++) {
double d = luaL_check_number(L, i);
if (d > dmax)
dmax = d;
}
lua_pushnumber(L, dmax);
return 1;
}
static void math_random (lua_State *L) {
static int math_random (lua_State *L) {
/* the '%' avoids the (rare) case of r==1, and is needed also because on
some systems (SunOS!) "rand()" may return a value larger than RAND_MAX */
double r = (double)(rand()%RAND_MAX) / (double)RAND_MAX;
if (lua_getparam(L, 1) == LUA_NOOBJECT) /* no arguments? */
lua_pushnumber(L, r); /* Number between 0 and 1 */
else {
int l, u; /* lower & upper limits */
if (lua_getparam(L, 2) == LUA_NOOBJECT) { /* only one argument? */
l = 1;
u = luaL_check_int(L, 1);
switch (lua_gettop(L)) { /* check number of arguments */
case 0: { /* no arguments */
lua_pushnumber(L, r); /* Number between 0 and 1 */
break;
}
else { /* two arguments */
l = luaL_check_int(L, 1);
u = luaL_check_int(L, 2);
case 1: { /* only upper limit */
int u = luaL_check_int(L, 1);
luaL_arg_check(L, 1<=u, 1, "interval is empty");
lua_pushnumber(L, (int)(r*u)+1); /* integer between 1 and `u' */
break;
}
luaL_arg_check(L, l<=u, 1, "interval is empty");
lua_pushnumber(L, (int)(r*(u-l+1))+l); /* integer between `l' and `u' */
case 2: { /* lower and upper limits */
int l = luaL_check_int(L, 1);
int u = luaL_check_int(L, 2);
luaL_arg_check(L, l<=u, 2, "interval is empty");
lua_pushnumber(L, (int)(r*(u-l+1))+l); /* integer between `l' and `u' */
break;
}
default: lua_error(L, "wrong number of arguments");
}
return 1;
}
static void math_randomseed (lua_State *L) {
static int math_randomseed (lua_State *L) {
srand(luaL_check_int(L, 1));
return 0;
}
@@ -199,9 +230,10 @@ static const struct luaL_reg mathlib[] = {
*/
void lua_mathlibopen (lua_State *L) {
luaL_openl(L, mathlib);
lua_pushcfunction(L, math_pow);
lua_pushnumber(L, 0); /* to get its tag */
lua_settagmethod(L, lua_tag(L, lua_pop(L)), "pow");
lua_pushcfunction(L, math_pow);
lua_settagmethod(L, lua_tag(L, -2), "pow");
lua_settop(L, -1); /* remove number */
lua_pushnumber(L, PI); lua_setglobal(L, "PI");
}