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perf: Guarantee path width is non-negative

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This quells the following warning:

  perf/micro/hatching.c:39:5: warning: cannot optimize loop, the
  loop counter may overflow

Width and height aren't going to be negative so enforce it so that the
compiler can do whatever optimization it wants to do.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Bryce Harrington 2014-02-18 17:37:22 -08:00
parent 4144307dbf
commit a346e40ed3
1 changed files with 2 additions and 2 deletions
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4
perf/micro/hatching.c
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@ -32,9 +32,9 @@
#define WIDTH 100
#define HEIGHT 100
static void path (cairo_t *cr, int width, int height)
static void path (cairo_t *cr, unsigned int width, unsigned int height)
{
int i;
unsigned int i;
for (i = 0; i < width+1; i += STEP) {
cairo_rectangle (cr, i-1, -1, 2, height+2);