Re: [PATCH 4/4] riscv: Addfpgetroundtoi and fpsetroundtoi stubs
"Keith Packard" <[email protected]>
| Newsgroups | gmane.comp.lib.newlib |
|---|---|
| Message-ID | <[email protected]> |
Kito Cheng <[email protected]> writes: > According RISC-V ISA spec, V20190608 11.7: > "All floating-point to integer and integer to floating-point > conversion instructions round according to the rm field." > So seem like FP_RDI_RD would be better value if hard float is available. I just realized -- we might be able to do that on targets with hard float and double, but many targets have only hard float and use software for doubles. In this case, the rounding mode will differ between float (hardware) and double (software). So, perhaps this API should just return -1 as well... -- -keith
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