Output of memcheck.exe Test executed on a Compaq LTE5100 90MHZ Pentium Laptop with 40MB RAM Buffer size 1600000 , avg for 2, aligned 2193310368 unaligned 2194910401- sanity checked passed This is an aligned buffer clear avg twice, the buffer is left in the state after the first clear. fpu_memclr nn - avg 1929695 chk_memset16 nn - avg 4234690 chk_memset32 nn - avg 4249889 memset nn - avg 4712468 just_clear nn - avg 3754790 chk_clear nn - avg 4469593 fpu_chkclr nn - avg 10610948 fpu_memclr8 nn - avg 2828487 this is an aligned buffer clear avg twice, the buffer is set to zero after every clear. fpu_memclr 00 - avg 1864148 chk_memset16 00 - avg 3483577 chk_memset32 00 - avg 3444638 memset 00 - avg 4690991 just_clear 00 - avg 3891627 chk_clear 00 - avg 3596353 fpu_chkclr 00 - avg 4982558 fpu_memclr8 00 - avg 2816689 this is an aligned buffer clear avg twice, the buffer is set to random data after every clear. fpu_memclr RR - avg 1909136 chk_memset16 RR - avg 5118559 chk_memset32 RR - avg 5092742 memset RR - avg 4621429 just_clear RR - avg 3749532 chk_clear RR - avg 5262784 fpu_chkclr RR - avg 4886315 fpu_memclr8 RR - avg 2809710 this is an unaligned buffer clear avg twice, the buffer is left alone after every clear. fpu_memclr nn - avg 1907431 chk_memset16 nn - avg 5914812 chk_memset32 nn - avg 5910755 memset nn - avg 4640674 just_clear nn - avg 7604322 chk_clear nn - avg 6109394 fpu_chkclr nn - avg 12375738 fpu_memclr8 nn - avg 5662825 this is an unaligned buffer clear avg twice, the buffer is set to zero after every clear. fpu_memclr 00 - avg 1911618 chk_memset16 00 - avg 4570012 chk_memset32 00 - avg 4574478 memset 00 - avg 4641863 just_clear 00 - avg 7616692 chk_clear 00 - avg 4663084 fpu_chkclr 00 - avg 6577958 fpu_memclr8 00 - avg 5637999 this is an unaligned buffer clear avg twice, the buffer is set to random data after every clear. fpu_memclr RR - avg 1874464 chk_memset16 RR - avg 7295750 chk_memset32 RR - avg 7290610 memset RR - avg 4631774 just_clear RR - avg 7452049 chk_clear RR - avg 7453875 fpu_chkclr RR - avg 6473950 fpu_memclr8 RR - avg 5617121