several functions deprecated (cosh, sinh, atanh, pow, frexp, ldexp)

lmathlib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lmathlib.c,v 1.98 2014/04/17 16:09:40 roberto Exp roberto $
+** $Id: lmathlib.c,v 1.99 2014/05/02 16:36:51 roberto Exp roberto $
 ** Standard mathematical library
 ** See Copyright Notice in lua.h
 */
@@ -48,31 +48,16 @@ static int math_sin (lua_State *L) {
   return 1;
 }
 
-static int math_sinh (lua_State *L) {
-  lua_pushnumber(L, l_mathop(sinh)(luaL_checknumber(L, 1)));
-  return 1;
-}
-
 static int math_cos (lua_State *L) {
   lua_pushnumber(L, l_mathop(cos)(luaL_checknumber(L, 1)));
   return 1;
 }
 
-static int math_cosh (lua_State *L) {
-  lua_pushnumber(L, l_mathop(cosh)(luaL_checknumber(L, 1)));
-  return 1;
-}
-
 static int math_tan (lua_State *L) {
   lua_pushnumber(L, l_mathop(tan)(luaL_checknumber(L, 1)));
   return 1;
 }
 
-static int math_tanh (lua_State *L) {
-  lua_pushnumber(L, l_mathop(tanh)(luaL_checknumber(L, 1)));
-  return 1;
-}
-
 static int math_asin (lua_State *L) {
   lua_pushnumber(L, l_mathop(asin)(luaL_checknumber(L, 1)));
   return 1;
@@ -84,13 +69,9 @@ static int math_acos (lua_State *L) {
 }
 
 static int math_atan (lua_State *L) {
-  lua_pushnumber(L, l_mathop(atan)(luaL_checknumber(L, 1)));
+  lua_Number y = luaL_checknumber(L, 1);
-  return 1;
+  lua_Number x = luaL_optnumber(L, 2, 1);
-}
+  lua_pushnumber(L, l_mathop(atan2)(y, x));
-
-static int math_atan2 (lua_State *L) {
-  lua_pushnumber(L, l_mathop(atan2)(luaL_checknumber(L, 1),
-                                luaL_checknumber(L, 2)));
   return 1;
 }
 
@@ -153,13 +134,6 @@ static int math_sqrt (lua_State *L) {
   return 1;
 }
 
-static int math_pow (lua_State *L) {
-  lua_Number x = luaL_checknumber(L, 1);
-  lua_Number y = luaL_checknumber(L, 2);
-  lua_pushnumber(L, l_mathop(pow)(x, y));
-  return 1;
-}
-
 static int math_log (lua_State *L) {
   lua_Number x = luaL_checknumber(L, 1);
   lua_Number res;
@@ -174,13 +148,6 @@ static int math_log (lua_State *L) {
   return 1;
 }
 
-#if defined(LUA_COMPAT_LOG10)
-static int math_log10 (lua_State *L) {
-  lua_pushnumber(L, l_mathop(log10)(luaL_checknumber(L, 1)));
-  return 1;
-}
-#endif
-
 static int math_exp (lua_State *L) {
   lua_pushnumber(L, l_mathop(exp)(luaL_checknumber(L, 1)));
   return 1;
@@ -196,38 +163,24 @@ static int math_rad (lua_State *L) {
   return 1;
 }
 
-static int math_frexp (lua_State *L) {
-  int e;
-  lua_pushnumber(L, l_mathop(frexp)(luaL_checknumber(L, 1), &e));
-  lua_pushinteger(L, e);
-  return 2;
-}
-
-static int math_ldexp (lua_State *L) {
-  lua_Number x = luaL_checknumber(L, 1);
-  int ep = luaL_checkint(L, 2);
-  lua_pushnumber(L, l_mathop(ldexp)(x, ep));
-  return 1;
-}
-
 
 static int math_min (lua_State *L) {
   int n = lua_gettop(L);  /* number of arguments */
-  int imax = 1;
+  int imin = 1;  /* index of current minimum value */
   int i;
   luaL_argcheck(L, n >= 1, 1, "value expected");
   for (i = 2; i <= n; i++) {
-    if (lua_compare(L, i, imax, LUA_OPLT))
+    if (lua_compare(L, i, imin, LUA_OPLT))
-      imax = i;
+      imin = i;
   }
-  lua_pushvalue(L, imax);
+  lua_pushvalue(L, imin);
   return 1;
 }
 
 
 static int math_max (lua_State *L) {
   int n = lua_gettop(L);  /* number of arguments */
-  int imax = 1;
+  int imax = 1;  /* index of current maximum value */
   int i;
   luaL_argcheck(L, n >= 1, 1, "value expected");
   for (i = 2; i <= n; i++) {
@@ -294,39 +247,92 @@ static int math_type (lua_State *L) {
 }
 
 
+/*
+** {==================================================================
+** Deprecated functions (for compatibility only)
+** ===================================================================
+*/
+#if defined(LUA_COMPAT_MATHLIB)
+
+static int math_cosh (lua_State *L) {
+  lua_pushnumber(L, l_mathop(cosh)(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_sinh (lua_State *L) {
+  lua_pushnumber(L, l_mathop(sinh)(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_tanh (lua_State *L) {
+  lua_pushnumber(L, l_mathop(tanh)(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+static int math_pow (lua_State *L) {
+  lua_Number x = luaL_checknumber(L, 1);
+  lua_Number y = luaL_checknumber(L, 2);
+  lua_pushnumber(L, l_mathop(pow)(x, y));
+  return 1;
+}
+
+static int math_frexp (lua_State *L) {
+  int e;
+  lua_pushnumber(L, l_mathop(frexp)(luaL_checknumber(L, 1), &e));
+  lua_pushinteger(L, e);
+  return 2;
+}
+
+static int math_ldexp (lua_State *L) {
+  lua_Number x = luaL_checknumber(L, 1);
+  int ep = luaL_checkint(L, 2);
+  lua_pushnumber(L, l_mathop(ldexp)(x, ep));
+  return 1;
+}
+
+static int math_log10 (lua_State *L) {
+  lua_pushnumber(L, l_mathop(log10)(luaL_checknumber(L, 1)));
+  return 1;
+}
+
+#endif
+/* }================================================================== */
+
+
+
 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},
   {"ifloor", math_ifloor},
   {"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},
   {"type", math_type},
+#if defined(LUA_COMPAT_MATHLIB)
+  {"atan2", math_atan},
+  {"cosh",   math_cosh},
+  {"sinh",   math_sinh},
+  {"tanh",   math_tanh},
+  {"pow",   math_pow},
+  {"frexp", math_frexp},
+  {"ldexp", math_ldexp},
+  {"log10", math_log10},
+#endif
   {NULL, NULL}
 };