diff options
Diffstat (limited to 'tests/sysy_lvX/069_exgcd.sy')
| -rw-r--r-- | tests/sysy_lvX/069_exgcd.sy | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tests/sysy_lvX/069_exgcd.sy b/tests/sysy_lvX/069_exgcd.sy new file mode 100644 index 0000000..3abdbcf --- /dev/null +++ b/tests/sysy_lvX/069_exgcd.sy @@ -0,0 +1,22 @@ +int exgcd(int a,int b,int x[],int y[]) { + if(b == 0) { + x[0] = 1; + y[0] = 0; + return a; + } + else { + int r = exgcd(b, a % b, x, y); + int t = x[0]; + x[0] = y[0]; + y[0] = (t - a / b * y[0]); + return r; + } +} + +int main() { + int a = 7, b = 15, x[1] = {1}, y[1] = {1}; + exgcd(a, b, x, y); + x[0] = (x[0] % b + b) % b; + putint(x[0]); + return 0; +}
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