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-rw-r--r-- | test/CodeGen/mandel.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/test/CodeGen/mandel.c b/test/CodeGen/mandel.c new file mode 100644 index 0000000000..f9b5972216 --- /dev/null +++ b/test/CodeGen/mandel.c @@ -0,0 +1,73 @@ +// RUN: clang -emit-llvm %s + +/* Sparc is not C99-compliant */ +#if defined(sparc) || defined(__sparc__) || defined(__sparcv9) + +int main() { return 0; } + +#else /* sparc */ + +#define ESCAPE 2 +#define IMAGE_WIDTH 150 +#define IMAGE_HEIGHT 50 +#if 1 +#define IMAGE_SIZE 60 +#else +#define IMAGE_SIZE 5000 +#endif +#define START_X -2.1 +#define END_X 1.0 +#define START_Y -1.25 +#define MAX_ITER 100 + +#define step_X ((END_X - START_X)/IMAGE_WIDTH) +#define step_Y ((-START_Y - START_Y)/IMAGE_HEIGHT) + +#define I 1.0iF + +#if defined(__FreeBSD__) || defined(__OpenBSD__) +#include <complex.h> +#elif defined(__APPLE__) +#include <math.h> +#else +#include <tgmath.h> +#endif + +#include <stdio.h> + +volatile double __complex__ accum; + +void mandel() { + int x, y, n; + for (y = 0; y < IMAGE_HEIGHT; ++y) { + for (x = 0; x < IMAGE_WIDTH; ++x) { + double __complex__ c = (START_X+x*step_X) + (START_Y+y*step_Y) * I; + double __complex__ z = 0.0; + + for (n = 0; n < MAX_ITER; ++n) { + z = z * z + c; + if (hypot(__real__ z, __imag__ z) >= ESCAPE) + break; + } + + if (n == MAX_ITER) + putchar(' '); + else if (n > 6) + putchar('.'); + else if (n > 3) + putchar('+'); + else if (n > 2) + putchar('x'); + else + putchar('*'); + } + putchar('\n'); + } +} + +int main() { + mandel(); + return 0; +} + +#endif /* sparc */ |