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first implementation of multiple states (reentrant code).

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This commit is contained in:
Roberto Ierusalimschy
1999-11-22 11:12:07 -02:00
parent 951897c093
commit 29ede6aa13
44 changed files with 2081 additions and 1936 deletions
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144
lmathlib.c
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@@ -1,5 +1,5 @@
/*
** $Id: lmathlib.c,v 1.18 1999/08/16 20:52:00 roberto Exp roberto $
** $Id: lmathlib.c,v 1.19 1999/08/18 14:40:51 roberto Exp roberto $
** Lua standard mathematical library
** See Copyright Notice in lua.h
*/
@@ -8,14 +8,16 @@
#include <stdlib.h>
#include <math.h>
#define LUA_REENTRANT
#include "lauxlib.h"
#include "lua.h"
#include "lualib.h"
#undef PI
#define PI (3.14159265358979323846)
#define RADIANS_PER_DEGREE (PI/180.0)
#define PI (3.14159265358979323846)
#define RADIANS_PER_DEGREE (PI/180.0)
@@ -32,138 +34,138 @@
#endif
static void math_abs (void) {
lua_pushnumber(fabs(luaL_check_number(1)));
static void math_abs (lua_State *L) {
lua_pushnumber(L, fabs(luaL_check_number(L, 1)));
}
static void math_sin (void) {
lua_pushnumber(sin(TORAD(luaL_check_number(1))));
static void math_sin (lua_State *L) {
lua_pushnumber(L, sin(TORAD(luaL_check_number(L, 1))));
}
static void math_cos (void) {
lua_pushnumber(cos(TORAD(luaL_check_number(1))));
static void math_cos (lua_State *L) {
lua_pushnumber(L, cos(TORAD(luaL_check_number(L, 1))));
}
static void math_tan (void) {
lua_pushnumber(tan(TORAD(luaL_check_number(1))));
static void math_tan (lua_State *L) {
lua_pushnumber(L, tan(TORAD(luaL_check_number(L, 1))));
}
static void math_asin (void) {
lua_pushnumber(FROMRAD(asin(luaL_check_number(1))));
static void math_asin (lua_State *L) {
lua_pushnumber(L, FROMRAD(asin(luaL_check_number(L, 1))));
}
static void math_acos (void) {
lua_pushnumber(FROMRAD(acos(luaL_check_number(1))));
static void math_acos (lua_State *L) {
lua_pushnumber(L, FROMRAD(acos(luaL_check_number(L, 1))));
}
static void math_atan (void) {
lua_pushnumber(FROMRAD(atan(luaL_check_number(1))));
static void math_atan (lua_State *L) {
lua_pushnumber(L, FROMRAD(atan(luaL_check_number(L, 1))));
}
static void math_atan2 (void) {
lua_pushnumber(FROMRAD(atan2(luaL_check_number(1), luaL_check_number(2))));
static void math_atan2 (lua_State *L) {
lua_pushnumber(L, FROMRAD(atan2(luaL_check_number(L, 1), luaL_check_number(L, 2))));
}
static void math_ceil (void) {
lua_pushnumber(ceil(luaL_check_number(1)));
static void math_ceil (lua_State *L) {
lua_pushnumber(L, ceil(luaL_check_number(L, 1)));
}
static void math_floor (void) {
lua_pushnumber(floor(luaL_check_number(1)));
static void math_floor (lua_State *L) {
lua_pushnumber(L, floor(luaL_check_number(L, 1)));
}
static void math_mod (void) {
lua_pushnumber(fmod(luaL_check_number(1), luaL_check_number(2)));
static void math_mod (lua_State *L) {
lua_pushnumber(L, fmod(luaL_check_number(L, 1), luaL_check_number(L, 2)));
}
static void math_sqrt (void) {
lua_pushnumber(sqrt(luaL_check_number(1)));
static void math_sqrt (lua_State *L) {
lua_pushnumber(L, sqrt(luaL_check_number(L, 1)));
}
static void math_pow (void) {
lua_pushnumber(pow(luaL_check_number(1), luaL_check_number(2)));
static void math_pow (lua_State *L) {
lua_pushnumber(L, pow(luaL_check_number(L, 1), luaL_check_number(L, 2)));
}
static void math_log (void) {
lua_pushnumber(log(luaL_check_number(1)));
static void math_log (lua_State *L) {
lua_pushnumber(L, log(luaL_check_number(L, 1)));
}
static void math_log10 (void) {
lua_pushnumber(log10(luaL_check_number(1)));
static void math_log10 (lua_State *L) {
lua_pushnumber(L, log10(luaL_check_number(L, 1)));
}
static void math_exp (void) {
lua_pushnumber(exp(luaL_check_number(1)));
static void math_exp (lua_State *L) {
lua_pushnumber(L, exp(luaL_check_number(L, 1)));
}
static void math_deg (void) {
lua_pushnumber(luaL_check_number(1)/RADIANS_PER_DEGREE);
static void math_deg (lua_State *L) {
lua_pushnumber(L, luaL_check_number(L, 1)/RADIANS_PER_DEGREE);
}
static void math_rad (void) {
lua_pushnumber(luaL_check_number(1)*RADIANS_PER_DEGREE);
static void math_rad (lua_State *L) {
lua_pushnumber(L, luaL_check_number(L, 1)*RADIANS_PER_DEGREE);
}
static void math_frexp (void) {
static void math_frexp (lua_State *L) {
int e;
lua_pushnumber(frexp(luaL_check_number(1), &e));
lua_pushnumber(e);
lua_pushnumber(L, frexp(luaL_check_number(L, 1), &e));
lua_pushnumber(L, e);
}
static void math_ldexp (void) {
lua_pushnumber(ldexp(luaL_check_number(1), luaL_check_int(2)));
static void math_ldexp (lua_State *L) {
lua_pushnumber(L, ldexp(luaL_check_number(L, 1), luaL_check_int(L, 2)));
}
static void math_min (void) {
static void math_min (lua_State *L) {
int i = 1;
double dmin = luaL_check_number(i);
while (lua_getparam(++i) != LUA_NOOBJECT) {
double d = luaL_check_number(i);
double dmin = luaL_check_number(L, i);
while (lua_getparam(L, ++i) != LUA_NOOBJECT) {
double d = luaL_check_number(L, i);
if (d < dmin)
dmin = d;
}
lua_pushnumber(dmin);
lua_pushnumber(L, dmin);
}
static void math_max (void) {
static void math_max (lua_State *L) {
int i = 1;
double dmax = luaL_check_number(i);
while (lua_getparam(++i) != LUA_NOOBJECT) {
double d = luaL_check_number(i);
double dmax = luaL_check_number(L, i);
while (lua_getparam(L, ++i) != LUA_NOOBJECT) {
double d = luaL_check_number(L, i);
if (d > dmax)
dmax = d;
}
lua_pushnumber(dmax);
lua_pushnumber(L, dmax);
}
static void math_random (void) {
static void 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 bigger than RAND_MAX */
double r = (double)(rand()%RAND_MAX) / (double)RAND_MAX;
if (lua_getparam(1) == LUA_NOOBJECT) /* no arguments? */
lua_pushnumber(r); /* real between 0 & 1 */
if (lua_getparam(L, 1) == LUA_NOOBJECT) /* no arguments? */
lua_pushnumber(L, r); /* real between 0 & 1 */
else {
int l, u; /* lower & upper limits */
if (lua_getparam(2) == LUA_NOOBJECT) { /* only one argument? */
if (lua_getparam(L, 2) == LUA_NOOBJECT) { /* only one argument? */
l = 1;
u = luaL_check_int(1);
u = luaL_check_int(L, 1);
}
else { /* two arguments */
l = luaL_check_int(1);
u = luaL_check_int(2);
l = luaL_check_int(L, 1);
u = luaL_check_int(L, 2);
}
luaL_arg_check(l<=u, 1, "interval is empty");
lua_pushnumber((int)(r*(u-l+1))+l); /* integer between l & u */
luaL_arg_check(L, l<=u, 1, "interval is empty");
lua_pushnumber(L, (int)(r*(u-l+1))+l); /* integer between l & u */
}
}
static void math_randomseed (void) {
srand(luaL_check_int(1));
static void math_randomseed (lua_State *L) {
srand(luaL_check_int(L, 1));
}
@@ -196,11 +198,11 @@ static const struct luaL_reg mathlib[] = {
/*
** Open math library
*/
void lua_mathlibopen (void) {
luaL_openlib(mathlib, (sizeof(mathlib)/sizeof(mathlib[0])));
lua_pushcfunction(math_pow);
lua_pushnumber(0); /* to get its tag */
lua_settagmethod(lua_tag(lua_pop()), "pow");
lua_pushnumber(PI); lua_setglobal("PI");
void lua_mathlibopen (lua_State *L) {
luaL_openlib(L, mathlib, (sizeof(mathlib)/sizeof(mathlib[0])));
lua_pushcfunction(L, math_pow);
lua_pushnumber(L, 0); /* to get its tag */
lua_settagmethod(L, lua_tag(L, lua_pop(L)), "pow");
lua_pushnumber(L, PI); lua_setglobal(L, "PI");
}