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Bug: https://bugs.gentoo.org/600894 --- a/io.cpp +++ b/io.cpp @@ -22,6 +22,7 @@ #include <stdlib.h> #include <stdio.h> #include <string.h> +#include <cmath> #include <SDL/SDL.h> @@ -894,7 +895,7 @@ else { if ( jumping ) - yspeed = -jumpheight - abs(xspeed)/4; + yspeed = -jumpheight - std::abs(xspeed)/4; } short TempX = (x + width/2) / TILESIZE;