[backend]更新脚本和库以支持性能测试用例

testdata/performance/h-7-01.sy

@@ -0,0 +1,43 @@
+float i_buf[10000000];
+float o_buf[10000000];
+
+float newtons_sqrt_recursive(float n, float x, float prec) {
+    float r = (x + n / x) * 0.5;
+    float d;
+    if (x < r) {
+        d = r - x;
+    } else {
+        d = x - r;
+    }
+    if (d <= prec) {
+        return r;
+    } else {
+        return newtons_sqrt_recursive(n, r, prec);
+    }
+}
+
+float newtons_sqrt(float n) {
+    const float prec = 0.0000000001;
+    if (n <= 0) {
+        return 0;
+    }
+
+    float x = (n + 1) * 0.5;
+    return newtons_sqrt_recursive(n, x, prec);
+}
+
+int main() {
+    int n = getfarray(i_buf);
+    starttime();
+
+    int i = 0;
+    while (i < n) {
+        o_buf[i] = newtons_sqrt(i_buf[i]);
+        i = i + 1;
+    }
+
+    stoptime();
+    putfarray(n, o_buf);
+    return 0;
+}
+