ref: d3b995b6e6d02a4c2413313b34a1548a777f99f9
dir: /internal.h/
/* alloc */ void *emalloc(ulong); void *erealloc(void*, ulong); Memimage *eallocmemimage(Rectangle, ulong); /* fb */ Framebuf *mkfb(Rectangle); void rmfb(Framebuf*); Framebufctl *mkfbctl(Rectangle); void rmfbctl(Framebufctl*); /* render */ void shade(Framebuf*, OBJ*, Memimage*, Shader*, ulong); /* util */ int min(int, int); int max(int, int); void memsetd(double*, double, usize); /* nanosec */ uvlong nanosec(void);