+#define SPEED_CHACHA20(Name, fname) \
+static void \
+test_speed_ ## fname(void) \
+{ \
+ unsigned char key[32]; \
+ unsigned char buf[8192]; \
+ unsigned char iv[12]; \
+ int i; \
+ long num; \
+ \
+ memset(key, 'T', sizeof key); \
+ memset(buf, 'P', sizeof buf); \
+ memset(iv, 'X', sizeof iv); \
+ for (i = 0; i < 10; i ++) { \
+ br_ ## fname ## _run(key, iv, i, buf, sizeof buf); \
+ } \
+ num = 10; \
+ for (;;) { \
+ clock_t begin, end; \
+ double tt; \
+ long k; \
+ \
+ begin = clock(); \
+ for (k = num; k > 0; k --) { \
+ br_ ## fname ## _run(key, iv, \
+ (uint32_t)k, buf, sizeof buf); \
+ } \
+ end = clock(); \
+ tt = (double)(end - begin) / CLOCKS_PER_SEC; \
+ if (tt >= 2.0) { \
+ printf("%-30s %8.2f MB/s\n", #Name, \
+ ((double)sizeof buf) * (double)num \
+ / (tt * 1000000.0)); \
+ fflush(stdout); \
+ return; \
+ } \
+ num <<= 1; \
+ } \
+}
+