| /* PR target/44606 */ |
| /* { dg-do run } */ |
| /* { dg-options "-O2" } */ |
| /* { dg-skip-if "requires io" { freestanding } } */ |
| |
| #include <stdio.h> |
| |
| extern void abort (void); |
| |
| typedef struct _PixelPacket { unsigned char r, g, b; } |
| PixelPacket; |
| #define ARRAYLEN(X) (sizeof(X)/sizeof(X[0])) |
| PixelPacket q[6]; |
| #define COLS (ARRAYLEN(q) - 1) |
| PixelPacket p[2*COLS + 22]; |
| #define Minify(POS, WEIGHT) do { \ |
| total_r += (WEIGHT)*(p[POS].r); \ |
| total_g += (WEIGHT)*(p[POS].g); \ |
| total_b += (WEIGHT)*(p[POS].b); \ |
| } while (0) |
| unsigned long columns = COLS; |
| int main(void) |
| { |
| static const unsigned char answers[COLS] = { 31, 32, 34, 35, 36 }; |
| unsigned long x; |
| for (x = 0; x < sizeof(p)/sizeof(p[0]); x++) { |
| p[x].b = (x + 34) | 1; |
| } |
| for (x = 0; x < columns; x++) { |
| double total_r = 0, total_g = 0, total_b = 0; |
| double saved_r = 0, saved_g = 0, saved_b = 0; |
| Minify(2*x + 0, 3.0); |
| Minify(2*x + 1, 7.0); |
| Minify(2*x + 2, 7.0); |
| saved_r = total_r; |
| saved_g = total_g; |
| Minify(2*x + 11, 15.0); |
| Minify(2*x + 12, 7.0); |
| Minify(2*x + 18, 7.0); |
| Minify(2*x + 19, 15.0); |
| Minify(2*x + 20, 15.0); |
| Minify(2*x + 21, 7.0); |
| q[x].r = (unsigned char)(total_r/128.0 + 0.5); |
| q[x].g = (unsigned char)(total_g/128.0 + 0.5); |
| q[x].b = (unsigned char)(total_b/128.0 + 0.5); |
| fprintf(stderr, "r:%f g:%f b:%f\n", saved_r, saved_g, saved_b); |
| } |
| for (x = 0; x < COLS; x++) { |
| if (answers[x] != q[x].b) |
| abort(); |
| } |
| return 0; |
| } |