tumble / file diff

     1.1 diff -r 8d7bd2fa5db6 -r 41804cc569ab bitblt.c
     1.2 --- a/bitblt.c	Wed Jan 02 10:17:24 2002 +0000
     1.3 +++ b/bitblt.c	Wed Jan 02 10:17:48 2002 +0000
     1.4 @@ -12,20 +12,23 @@
     1.5  #endif
     1.6  }
     1.7  
     1.8 -static inline u32 rect_width (Rect r)
     1.9 +static inline s32 rect_width (Rect r)
    1.10  {
    1.11    return (r.lower_right.x - r.upper_left.x);
    1.12  }
    1.13  
    1.14 -static inline u32 rect_height (Rect r)
    1.15 +static inline s32 rect_height (Rect r)
    1.16  {
    1.17    return (r.lower_right.y - r.upper_left.y);
    1.18  }
    1.19  
    1.20 -Bitmap *create_bitmap (u32 width, u32 height)
    1.21 +Bitmap *create_bitmap (s32 width, s32 height)
    1.22  {
    1.23    Bitmap *bitmap;
    1.24  
    1.25 +  if ((width <= 0) || (height <= 0))
    1.26 +    return (NULL);
    1.27 +
    1.28    bitmap = calloc (1, sizeof (Bitmap));
    1.29    if (! bitmap)
    1.30      return (NULL);