I am running a simple bare metal program with only the above specified instruction
[Instrn] fcvt h16 s25 [register values] SIMD register [25] = 0x9EA82A22AB98FBA8L FPCR = 0x40ae2f54 [with according mask removing the UFE and other unnecessary bit] The FPCR will set the rounding mode to negative infinity. Thanks, Gaurav On Tue, Aug 19, 2014 at 2:42 AM, Peter Maydell <peter.mayd...@linaro.org> wrote: > On 18 August 2014 22:04, Gaurav Sharma <gauravs.2...@gmail.com> wrote: > > Hi Peter, > > I cross checked it with a AFM model, and the results are indeed > different. > > The problem I think lies in how we treat de-normalized numbers which are > too > > small to represent in half precision. > > In case of qemu > >>> if(exp < -10) > >>> return signed/unsigned zero. > > However, in case rounding is set, we ignore and we return zero. This may > not > > be true and we may have a smallest possible denormalized number. > > Cool. Can you provide your test case, then, please? > > thanks > -- PMM >
