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CPUInfo: show the speed of 64 bit maths

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Andrew Tridgell 2011-12-19 18:52:00 +11:00
parent 4bdc872595
commit 11ff665ca0
1 changed files with 7 additions and 0 deletions
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7
Tools/CPUInfo/CPUInfo.pde
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@ -52,6 +52,8 @@ volatile uint16_t v_out_16 = 1;
volatile uint8_t v_8 = 1;
volatile uint8_t v_out_8 = 1;
volatile uint8_t mbuf1[128], mbuf2[128];
volatile uint64_t v_64 = 1;
volatile uint64_t v_out_64 = 1;
static void show_timings(void)
{
@ -107,6 +109,11 @@ static void show_timings(void)
TIMEIT("imul32", v_out_32 *= v_32, 100);
TIMEIT("idiv32", v_out_32 /= v_32, 100);
TIMEIT("iadd64", v_out_64 += v_64, 100);
TIMEIT("isub64", v_out_64 -= v_64, 100);
TIMEIT("imul64", v_out_64 *= v_64, 100);
TIMEIT("idiv64", v_out_64 /= v_64, 100);
TIMEIT("memcpy128", memcpy((void*)mbuf1, (const void *)mbuf2, sizeof(mbuf1)), 20);
TIMEIT("memset128", memset((void*)mbuf1, 1, sizeof(mbuf1)), 20);
TIMEIT("delay(1)", delay(1), 5);