74 lines
1.3 KiB
C
74 lines
1.3 KiB
C
// RUN: clang -emit-llvm %s
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/* Sparc is not C99-compliant */
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#if defined(sparc) || defined(__sparc__) || defined(__sparcv9)
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int main() { return 0; }
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#else /* sparc */
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#define ESCAPE 2
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#define IMAGE_WIDTH 150
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#define IMAGE_HEIGHT 50
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#if 1
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#define IMAGE_SIZE 60
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#else
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#define IMAGE_SIZE 5000
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#endif
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#define START_X -2.1
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#define END_X 1.0
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#define START_Y -1.25
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#define MAX_ITER 100
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#define step_X ((END_X - START_X)/IMAGE_WIDTH)
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#define step_Y ((-START_Y - START_Y)/IMAGE_HEIGHT)
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#define I 1.0iF
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#if defined(__FreeBSD__) || defined(__OpenBSD__)
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#include <complex.h>
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#elif defined(__APPLE__)
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#include <math.h>
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#else
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#include <tgmath.h>
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#endif
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#include <stdio.h>
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volatile double __complex__ accum;
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void mandel() {
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int x, y, n;
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for (y = 0; y < IMAGE_HEIGHT; ++y) {
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for (x = 0; x < IMAGE_WIDTH; ++x) {
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double __complex__ c = (START_X+x*step_X) + (START_Y+y*step_Y) * I;
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double __complex__ z = 0.0;
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for (n = 0; n < MAX_ITER; ++n) {
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z = z * z + c;
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if (hypot(__real__ z, __imag__ z) >= ESCAPE)
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break;
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}
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if (n == MAX_ITER)
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putchar(' ');
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else if (n > 6)
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putchar('.');
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else if (n > 3)
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putchar('+');
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else if (n > 2)
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putchar('x');
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else
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putchar('*');
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}
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putchar('\n');
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}
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}
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int main() {
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mandel();
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return 0;
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}
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#endif /* sparc */
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