[Power] Fix variable type to avoid invalidation

[Bug] Double can be represented with some inaccuracy e.g. 30.0 can be
   29.999999 which in case of casting to int is casted to 29 instead of 30
   as expected.

[Solution] Added std round to proper round double value to closest
inteager instead of cutting of the decimal part of number.

Change-Id: I20e889df9d6a0ff4434fc18b77016287f0bd45c7
Signed-off-by: Yunhee Seo <yuni.seo@samsung.com>

diff --git a/src/power/power_manager.cc b/src/power/power_manager.cc
index 4973b0c4cbfc89be0bf4d0f2268b02acc0fa38f7..db0b4fc6645eb6746b01b4d16a399a7f05625d61 100644 (file)
--- a/src/power/power_manager.cc
+++ b/src/power/power_manager.cc
@@ -183,7 +183,7 @@ PlatformResult PowerManager::SetScreenBrightness(double brightness) {
     return result;
   }
 
-  int platform_brightness = (int)(brightness * max_brightness_);
+  int platform_brightness = std::round(brightness * max_brightness_);
   if (0 == platform_brightness) {
     // The value '0' on native level is treated as setting ScreenState to "SCREEN_DIM", thus the
     // brightness values come from range from 1 to max_brightness_ (which is usually equal to