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authorPeter Breitenlohner <peb@mppmu.mpg.de>2013-06-24 09:06:05 +0000
committerPeter Breitenlohner <peb@mppmu.mpg.de>2013-06-24 09:06:05 +0000
commitf2587f58840bb84b1c9227177ed95997aa92a357 (patch)
tree69edf6685397f395547aff5be569f657d5405458 /Build/source/libs/lua52/lua-5.2.1/src/lmathlib.c
parentcd573af8ce5db24aae95c942b2ba505ca0a3338f (diff)
lua 5.2.1 (moved from luatexdir)
git-svn-id: svn://tug.org/texlive/trunk@30887 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/lua52/lua-5.2.1/src/lmathlib.c')
-rw-r--r--Build/source/libs/lua52/lua-5.2.1/src/lmathlib.c283
1 files changed, 283 insertions, 0 deletions
diff --git a/Build/source/libs/lua52/lua-5.2.1/src/lmathlib.c b/Build/source/libs/lua52/lua-5.2.1/src/lmathlib.c
new file mode 100644
index 00000000000..c3c605e86b2
--- /dev/null
+++ b/Build/source/libs/lua52/lua-5.2.1/src/lmathlib.c
@@ -0,0 +1,283 @@
+/*
+** $Id: lmathlib.c,v 1.81 2012/05/18 17:47:53 roberto Exp $
+** Standard mathematical library
+** See Copyright Notice in lua.h
+*/
+
+
+#include <stdlib.h>
+#include <math.h>
+
+#define lmathlib_c
+#define LUA_LIB
+
+#include "lua.h"
+
+#include "lauxlib.h"
+#include "lualib.h"
+
+
+/* macro 'l_tg' allows the addition of an 'l' or 'f' to all math operations */
+#if !defined(l_tg)
+#define l_tg(x) (x)
+#endif
+
+
+#undef PI
+#define PI (l_tg(3.1415926535897932384626433832795))
+#define RADIANS_PER_DEGREE (PI/180.0)
+
+
+
+static int math_abs (lua_State *L) {
+ lua_pushnumber(L, l_tg(fabs)(luaL_checknumber(L, 1)));
+ return 1;
+}
+
+static int math_sin (lua_State *L) {
+ lua_pushnumber(L, l_tg(sin)(luaL_checknumber(L, 1)));
+ return 1;
+}
+
+static int math_sinh (lua_State *L) {
+ lua_pushnumber(L, l_tg(sinh)(luaL_checknumber(L, 1)));
+ return 1;
+}
+
+static int math_cos (lua_State *L) {
+ lua_pushnumber(L, l_tg(cos)(luaL_checknumber(L, 1)));
+ return 1;
+}
+
+static int math_cosh (lua_State *L) {
+ lua_pushnumber(L, l_tg(cosh)(luaL_checknumber(L, 1)));
+ return 1;
+}
+
+static int math_tan (lua_State *L) {
+ lua_pushnumber(L, l_tg(tan)(luaL_checknumber(L, 1)));
+ return 1;
+}
+
+static int math_tanh (lua_State *L) {
+ lua_pushnumber(L, l_tg(tanh)(luaL_checknumber(L, 1)));
+ return 1;
+}
+
+static int math_asin (lua_State *L) {
+ lua_pushnumber(L, l_tg(asin)(luaL_checknumber(L, 1)));
+ return 1;
+}
+
+static int math_acos (lua_State *L) {
+ lua_pushnumber(L, l_tg(acos)(luaL_checknumber(L, 1)));
+ return 1;
+}
+
+static int math_atan (lua_State *L) {
+ lua_pushnumber(L, l_tg(atan)(luaL_checknumber(L, 1)));
+ return 1;
+}
+
+static int math_atan2 (lua_State *L) {
+ lua_pushnumber(L, l_tg(atan2)(luaL_checknumber(L, 1),
+ luaL_checknumber(L, 2)));
+ return 1;
+}
+
+static int math_ceil (lua_State *L) {
+ lua_pushnumber(L, l_tg(ceil)(luaL_checknumber(L, 1)));
+ return 1;
+}
+
+static int math_floor (lua_State *L) {
+ lua_pushnumber(L, l_tg(floor)(luaL_checknumber(L, 1)));
+ return 1;
+}
+
+static int math_fmod (lua_State *L) {
+ lua_pushnumber(L, l_tg(fmod)(luaL_checknumber(L, 1),
+ luaL_checknumber(L, 2)));
+ return 1;
+}
+
+static int math_modf (lua_State *L) {
+ lua_Number ip;
+ lua_Number fp = l_tg(modf)(luaL_checknumber(L, 1), &ip);
+ lua_pushnumber(L, ip);
+ lua_pushnumber(L, fp);
+ return 2;
+}
+
+static int math_sqrt (lua_State *L) {
+ lua_pushnumber(L, l_tg(sqrt)(luaL_checknumber(L, 1)));
+ return 1;
+}
+
+static int math_pow (lua_State *L) {
+ lua_pushnumber(L, l_tg(pow)(luaL_checknumber(L, 1),
+ luaL_checknumber(L, 2)));
+ return 1;
+}
+
+static int math_log (lua_State *L) {
+ lua_Number x = luaL_checknumber(L, 1);
+ lua_Number res;
+ if (lua_isnoneornil(L, 2))
+ res = l_tg(log)(x);
+ else {
+ lua_Number base = luaL_checknumber(L, 2);
+ if (base == 10.0) res = l_tg(log10)(x);
+ else res = l_tg(log)(x)/l_tg(log)(base);
+ }
+ lua_pushnumber(L, res);
+ return 1;
+}
+
+#if defined(LUA_COMPAT_LOG10)
+static int math_log10 (lua_State *L) {
+ lua_pushnumber(L, l_tg(log10)(luaL_checknumber(L, 1)));
+ return 1;
+}
+#endif
+
+static int math_exp (lua_State *L) {
+ lua_pushnumber(L, l_tg(exp)(luaL_checknumber(L, 1)));
+ return 1;
+}
+
+static int math_deg (lua_State *L) {
+ lua_pushnumber(L, luaL_checknumber(L, 1)/RADIANS_PER_DEGREE);
+ return 1;
+}
+
+static int math_rad (lua_State *L) {
+ lua_pushnumber(L, luaL_checknumber(L, 1)*RADIANS_PER_DEGREE);
+ return 1;
+}
+
+static int math_frexp (lua_State *L) {
+ int e;
+ lua_pushnumber(L, l_tg(frexp)(luaL_checknumber(L, 1), &e));
+ lua_pushinteger(L, e);
+ return 2;
+}
+
+static int math_ldexp (lua_State *L) {
+ lua_pushnumber(L, l_tg(ldexp)(luaL_checknumber(L, 1),
+ luaL_checkint(L, 2)));
+ return 1;
+}
+
+
+
+static int math_min (lua_State *L) {
+ int n = lua_gettop(L); /* number of arguments */
+ lua_Number dmin = luaL_checknumber(L, 1);
+ int i;
+ for (i=2; i<=n; i++) {
+ lua_Number d = luaL_checknumber(L, i);
+ if (d < dmin)
+ dmin = d;
+ }
+ lua_pushnumber(L, dmin);
+ return 1;
+}
+
+
+static int math_max (lua_State *L) {
+ int n = lua_gettop(L); /* number of arguments */
+ lua_Number dmax = luaL_checknumber(L, 1);
+ int i;
+ for (i=2; i<=n; i++) {
+ lua_Number d = luaL_checknumber(L, i);
+ if (d > dmax)
+ dmax = d;
+ }
+ lua_pushnumber(L, dmax);
+ return 1;
+}
+
+
+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 */
+ lua_Number r = (lua_Number)(rand()%RAND_MAX) / (lua_Number)RAND_MAX;
+ switch (lua_gettop(L)) { /* check number of arguments */
+ case 0: { /* no arguments */
+ lua_pushnumber(L, r); /* Number between 0 and 1 */
+ break;
+ }
+ case 1: { /* only upper limit */
+ lua_Number u = luaL_checknumber(L, 1);
+ luaL_argcheck(L, 1.0 <= u, 1, "interval is empty");
+ lua_pushnumber(L, l_tg(floor)(r*u) + 1.0); /* int in [1, u] */
+ break;
+ }
+ case 2: { /* lower and upper limits */
+ lua_Number l = luaL_checknumber(L, 1);
+ lua_Number u = luaL_checknumber(L, 2);
+ luaL_argcheck(L, l <= u, 2, "interval is empty");
+ lua_pushnumber(L, l_tg(floor)(r*(u-l+1)) + l); /* int in [l, u] */
+ break;
+ }
+ default: return luaL_error(L, "wrong number of arguments");
+ }
+ return 1;
+}
+
+
+static int math_randomseed (lua_State *L) {
+ srand(luaL_checkunsigned(L, 1));
+ (void)rand(); /* discard first value to avoid undesirable correlations */
+ return 0;
+}
+
+
+static const luaL_Reg mathlib[] = {
+ {"abs", math_abs},
+ {"acos", math_acos},
+ {"asin", math_asin},
+ {"atan2", math_atan2},
+ {"atan", math_atan},
+ {"ceil", math_ceil},
+ {"cosh", math_cosh},
+ {"cos", math_cos},
+ {"deg", math_deg},
+ {"exp", math_exp},
+ {"floor", math_floor},
+ {"fmod", math_fmod},
+ {"frexp", math_frexp},
+ {"ldexp", math_ldexp},
+#if defined(LUA_COMPAT_LOG10)
+ {"log10", math_log10},
+#endif
+ {"log", math_log},
+ {"max", math_max},
+ {"min", math_min},
+ {"modf", math_modf},
+ {"pow", math_pow},
+ {"rad", math_rad},
+ {"random", math_random},
+ {"randomseed", math_randomseed},
+ {"sinh", math_sinh},
+ {"sin", math_sin},
+ {"sqrt", math_sqrt},
+ {"tanh", math_tanh},
+ {"tan", math_tan},
+ {NULL, NULL}
+};
+
+
+/*
+** Open math library
+*/
+LUAMOD_API int luaopen_math (lua_State *L) {
+ luaL_newlib(L, mathlib);
+ lua_pushnumber(L, PI);
+ lua_setfield(L, -2, "pi");
+ lua_pushnumber(L, HUGE_VAL);
+ lua_setfield(L, -2, "huge");
+ return 1;
+}
+