Lua 3.13.1

1 files changed, 213 insertions, 0 deletions

diff --git a/src/lib/lmathlib.c b/src/lib/lmathlib.c
new file mode 100644
index 00000000..bdc534f5
--- /dev/null
+++ b/src/lib/lmathlib.c
@@ -0,0 +1,213 @@
+/*
+** $Id: lmathlib.c,v 1.10 1998/06/19 16:14:09 roberto Exp $
+** Lua standard mathematical library
+** See Copyright Notice in lua.h
+*/
+
+
+#include <stdlib.h>
+#include <math.h>
+
+#include "lauxlib.h"
+#include "lua.h"
+#include "lualib.h"
+
+#ifdef M_PI
+#define PI                      M_PI
+#else
+#define PI          ((double)3.14159265358979323846)
+#endif
+
+
+#define FROMRAD(a) ((a)*(180.0/PI))
+#define TORAD(a)    ((a)*(PI/180.0))
+
+
+static void math_abs (void)
+{
+  double d = luaL_check_number(1);
+  if (d < 0) d = -d;
+  lua_pushnumber(d);
+}
+
+static void math_sin (void)
+{
+  lua_pushnumber(sin(TORAD(luaL_check_number(1))));
+}
+
+static void math_cos (void)
+{
+  lua_pushnumber(cos(TORAD(luaL_check_number(1))));
+}
+
+static void math_tan (void)
+{
+  lua_pushnumber(tan(TORAD(luaL_check_number(1))));
+}
+
+static void math_asin (void)
+{
+  lua_pushnumber(FROMRAD(asin(luaL_check_number(1))));
+}
+
+static void math_acos (void)
+{
+  lua_pushnumber(FROMRAD(acos(luaL_check_number(1))));
+}
+
+static void math_atan (void)
+{
+  lua_pushnumber(FROMRAD(atan(luaL_check_number(1))));
+}
+
+static void math_atan2 (void)
+{
+  lua_pushnumber(FROMRAD(atan2(luaL_check_number(1), luaL_check_number(2))));
+}
+
+static void math_ceil (void)
+{
+  lua_pushnumber(ceil(luaL_check_number(1)));
+}
+
+static void math_floor (void)
+{
+  lua_pushnumber(floor(luaL_check_number(1)));
+}
+
+static void math_mod (void)
+{
+  lua_pushnumber(fmod(luaL_check_number(1), luaL_check_number(2)));
+}
+
+static void math_sqrt (void)
+{
+  lua_pushnumber(sqrt(luaL_check_number(1)));
+}
+
+static void math_pow (void)
+{
+  lua_pushnumber(pow(luaL_check_number(1), luaL_check_number(2)));
+}
+
+static void math_log (void)
+{
+  lua_pushnumber(log(luaL_check_number(1)));
+}
+
+static void math_log10 (void)
+{
+  lua_pushnumber(log10(luaL_check_number(1)));
+}
+
+static void math_exp (void)
+{
+  lua_pushnumber(exp(luaL_check_number(1)));
+}
+
+static void math_deg (void)
+{
+  lua_pushnumber(luaL_check_number(1)*(180.0/PI));
+}
+
+static void math_rad (void)
+{
+  lua_pushnumber(luaL_check_number(1)*(PI/180.0));
+}
+
+static void math_frexp (void) {
+  int e;
+  lua_pushnumber(frexp(luaL_check_number(1), &e));
+  lua_pushnumber(e);
+}
+
+static void math_ldexp (void) {
+  lua_pushnumber(ldexp(luaL_check_number(1), luaL_check_number(2)));
+}
+
+
+
+static void math_min (void)
+{
+  int i = 1;
+  double dmin = luaL_check_number(i);
+  while (lua_getparam(++i) != LUA_NOOBJECT) {
+    double d = luaL_check_number(i);
+    if (d < dmin)
+      dmin = d;
+  }
+  lua_pushnumber(dmin);
+}
+
+
+static void math_max (void)
+{
+  int i = 1;
+  double dmax = luaL_check_number(i);
+  while (lua_getparam(++i) != LUA_NOOBJECT) {
+    double d = luaL_check_number(i);
+    if (d > dmax)
+      dmax = d;
+  }
+  lua_pushnumber(dmax);
+}
+
+
+static void math_random (void)
+{
+  /* the '%' is needed because on some systems (SunOS!) "rand()" may */
+  /* return a value bigger than RAND_MAX... */
+  double r = (double)(rand()%RAND_MAX) / (double)RAND_MAX;
+  double l = luaL_opt_number(1, 0);
+  if (l == 0)
+    lua_pushnumber(r);
+  else
+    lua_pushnumber((int)(r*l)+1);
+}
+
+
+static void math_randomseed (void)
+{
+  srand(luaL_check_number(1));
+}
+
+
+static struct luaL_reg mathlib[] = {
+{"abs",   math_abs},
+{"sin",   math_sin},
+{"cos",   math_cos},
+{"tan",   math_tan},
+{"asin",  math_asin},
+{"acos",  math_acos},
+{"atan",  math_atan},
+{"atan2", math_atan2},
+{"ceil",  math_ceil},
+{"floor", math_floor},
+{"mod",   math_mod},
+{"frexp", math_frexp},
+{"ldexp", math_ldexp},
+{"sqrt",  math_sqrt},
+{"min",   math_min},
+{"max",   math_max},
+{"log",   math_log},
+{"log10", math_log10},
+{"exp",   math_exp},
+{"deg",   math_deg},
+{"rad",   math_rad},
+{"random",     math_random},
+{"randomseed", math_randomseed}
+};
+
+/*
+** Open math library
+*/
+void lua_mathlibopen (void)
+{
+  luaL_openlib(mathlib, (sizeof(mathlib)/sizeof(mathlib[0])));
+  lua_pushstring("deg"); lua_setglobal("_TRIGMODE");
+  lua_pushcfunction(math_pow);
+  lua_pushnumber(0);  /* to get its tag */
+  lua_settagmethod(lua_tag(lua_pop()), "pow");
+  lua_pushnumber(PI); lua_setglobal("PI");
+}
+