| LUAL_OPTNUMBER(3) | Library Functions Manual | LUAL_OPTNUMBER(3) |
luaL_optnumber —
if the function argument is a number, returns this number,
function indicator [-0, +0, v]
#include
<lauxlib.h>
lua_Number
luaL_optnumber(lua_State
*L, int narg,
lua_Number d);
luaL_optnumber()
if the function argument narg is a number, returns
this number. If this argument is absent or is nil,
returns d. Otherwise, raises an error.
Roberto Ierusalimschy, Luiz Henrique de Figueiredo, and Waldemar Celes, Lua 5.1 Reference Manual.
The luaL_optnumber() manual page is based
on Lua Reference Manual 5.1 and was created by Sergey Bronnikov.
| July 26, 2022 | Debian |