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| author | davidmetz <david.metz14@googlemail.com> | 2020-03-16 21:08:04 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-03-16 13:08:04 -0700 |
| commit | efc32d0cab1ee6e52626c0bd59b1929bbd2b2bbe (patch) | |
| tree | e69ba6e64d539ec73946e71ca04f23b6109cfd5b /pk | |
| parent | 2c4e689bc1ed4440d0d95b3b350ce872e7f75865 (diff) | |
| download | riscv-pk-efc32d0cab1ee6e52626c0bd59b1929bbd2b2bbe.zip riscv-pk-efc32d0cab1ee6e52626c0bd59b1929bbd2b2bbe.tar.gz riscv-pk-efc32d0cab1ee6e52626c0bd59b1929bbd2b2bbe.tar.bz2 | |
Fix CPI calcualtion for -s option (#192)
This attempt at rounding leads to wrong results, for example:
314689951 cycles
314690101 instructions
0.90 CPI
With my change results in:
314689951 cycles
314690101 instructions
0.99 CPI
I think this was supposed to be part of rounding behaviour but it doesn't work if only the final digit does it and there is no carry...
Instead I changed it to truncate after the second digit
Diffstat (limited to 'pk')
| -rw-r--r-- | pk/syscall.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/pk/syscall.c b/pk/syscall.c index 4978f3a..8101ec9 100644 --- a/pk/syscall.c +++ b/pk/syscall.c @@ -24,7 +24,7 @@ void sys_exit(int code) printk("%lld cycles\n", dc); printk("%lld instructions\n", di); printk("%d.%d%d CPI\n", (int)(dc/di), (int)(10ULL*dc/di % 10), - (int)((100ULL*dc + di/2)/di % 10)); + (int)((100ULL*dc)/di % 10)); } shutdown(code); } |