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Lua: All usage of double converted to float (#4502)

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* Lua: All usage of double converted to float. printf("%f") still uses promotion to double, (floating point va_args are always promoted to double)
Speed improvements:
 * reordering of rotable to put most used tables at the top
 * caching of last found global table
Use real pointer to rotable instead of misusing void* to pass integer value
Lua internal traces now turned on by TRACE_LUA_INTERNALS cmake option

* Replaced floating point division with multiplication (where possible), the hardware FPU is much faster at multiplication vs division.
stb_image: enabled STBI_NO_HDR and STBI_NO_LINEAR (removes code that we don't need)
This commit is contained in:
Damjan Adamic 2017-02-26 12:59:39 +01:00 • committed by Bertrand Songis
parent 3b149a22d1
commit a1a58ad8f8
16 changed files with 129 additions and 107 deletions
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16
radio/src/lua/api_general.cpp
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@ -153,10 +153,10 @@ static void luaPushLatLon(lua_State* L, TelemetrySensor & telemetrySensor, Telem
/* result is lua table containing members ["lat"] and ["lon"] as lua_Number (doubles) in decimal degrees */
{
lua_createtable(L, 0, 4);
lua_pushtablenumber(L, "lat", telemetryItem.gps.latitude / 1000000.0);
lua_pushtablenumber(L, "pilot-lat", telemetryItem.pilotLatitude / 1000000.0);
lua_pushtablenumber(L, "lon", telemetryItem.gps.longitude / 1000000.0);
lua_pushtablenumber(L, "pilot-lon", telemetryItem.pilotLongitude / 1000000.0);
lua_pushtablenumber(L, "lat", telemetryItem.gps.latitude * 0.000001f); // floating point multiplication is faster than division
lua_pushtablenumber(L, "pilot-lat", telemetryItem.pilotLatitude * 0.000001f);
lua_pushtablenumber(L, "lon", telemetryItem.gps.longitude * 0.000001f);
lua_pushtablenumber(L, "pilot-lon", telemetryItem.pilotLongitude * 0.000001f);
}
static void luaPushTelemetryDateTime(lua_State* L, TelemetrySensor & telemetrySensor, TelemetryItem & telemetryItem)
@ -173,7 +173,7 @@ static void luaPushCells(lua_State* L, TelemetrySensor & telemetrySensor, Teleme
lua_createtable(L, telemetryItem.cells.count, 0);
for (int i = 0; i < telemetryItem.cells.count; i++) {
lua_pushnumber(L, i + 1);
lua_pushnumber(L, telemetryItem.cells.values[i].value / 100.0);
lua_pushnumber(L, telemetryItem.cells.values[i].value * 0.01f);
lua_settable(L, -3);
}
}
@ -215,7 +215,7 @@ void luaGetValueAndPush(lua_State* L, int src)
}
}
else if (src == MIXSRC_TX_VOLTAGE) {
lua_pushnumber(L, float(value)/10.0);
lua_pushnumber(L, float(value) * 0.1f);
}
else {
lua_pushinteger(L, value);
@ -851,8 +851,8 @@ Returns (some of) the general radio settings
static int luaGetGeneralSettings(lua_State * L)
{
lua_newtable(L);
lua_pushtablenumber(L, "battMin", double(90+g_eeGeneral.vBatMin)/10);
lua_pushtablenumber(L, "battMax", double(120+g_eeGeneral.vBatMax)/10);
lua_pushtablenumber(L, "battMin", (90+g_eeGeneral.vBatMin) * 0.1f);
lua_pushtablenumber(L, "battMax", (120+g_eeGeneral.vBatMax) * 0.1f);
lua_pushtableinteger(L, "imperial", g_eeGeneral.imperial);
lua_pushtablestring(L, "language", TRANSLATIONS);
lua_pushtablestring(L, "voice", currentLanguagePack->id);