New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

fcvt.wu.d does not round up denormalized values #25

Open

michael-roe opened this issue Jan 30, 2020 · 0 comments

michael-roe commented Jan 30, 2020

If the rounding mode is set to round up, fcvt.wu.d of a denormalized value rounds down to zero rather than rounding up to 1. (Spike gets this right).

Here's a test:

.global _start
_start:
lui ra, 2
csrs mstatus, ra

_test:
li t0, 0x10
fmv.d.x f1, t0
fcvt.wu.d a0, f1, rup

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment