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power method (^) acts only in numbers.

This commit is contained in:
Roberto Ierusalimschy 1997-06-09 14:30:10 -03:00
parent 33ace03b5a
commit 414ebe8ce1
1 changed files with 3 additions and 2 deletions
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5
mathlib.c
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@ -3,7 +3,7 @@
** Mathematics library to LUA ** Mathematics library to LUA
*/ */
char *rcs_mathlib="$Id: mathlib.c,v 1.22 1997/04/04 22:24:51 roberto Exp roberto $"; char *rcs_mathlib="$Id: mathlib.c,v 1.23 1997/04/06 14:08:08 roberto Exp roberto $";
#include <stdlib.h> #include <stdlib.h>
#include <math.h> #include <math.h>
@ -210,6 +210,7 @@ static struct luaL_reg mathlib[] = {
void mathlib_open (void) void mathlib_open (void)
{ {
luaL_openlib(mathlib, (sizeof(mathlib)/sizeof(mathlib[0]))); luaL_openlib(mathlib, (sizeof(mathlib)/sizeof(mathlib[0])));
lua_settagmethod(0, "pow", math_pow); lua_pushnumber(0); /* to get its tag */
lua_settagmethod(lua_tag(lua_pop()), "pow", math_pow);
} }