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/*
local function to_base10(inp,basein)
local out = 0
for i=1,#inp do
out = out + (inp[i]*(basein^(#inp - i)))
end
return out
end
local function from_base10(inp,outbase)
local out = {}
while inp > 0 do
local rem = inp % outbase
inp = math.floor(inp / outbase)
table.insert(out,1,rem)
end
return out
end
local function baseT_to_N(inp,basein,baseout)
return from_base10(to_base10(inp,basein),baseout)
end
*/
#include <math.h>
#include <stdint.h>
#include "../lua.h"
#include "../table.h"
int l_baseconvert(lua_State* L){
luaL_checktype(L, 1, LUA_TTABLE);
int64_t base_import = luaL_checkinteger(L, 2);
int64_t base_export = luaL_checkinteger(L, 3);
size_t len = lua_objlen(L,1);
uint64_t out = 0;
for(size_t i = 1; i <= len; i++){
lua_pushnumber(L, i);
lua_gettable(L, 1);
out += luaL_checkinteger(L, -1) * pow(base_import, len - i);
}
lua_newtable(L);
for(int i = 1; out > 0; i++){
uint64_t rem = out % base_export;
out /= base_export;
lua_pushnumber(L,i);
lua_pushnumber(L, rem);
lua_settable(L, -3);
}
return 1;
};
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