search for: rint

Hello, I believe llvm.rint description in LangRef is not quite complete. Llvm seems to map math.h:rint() call to llvm.rint intrinsic, and the LangRef says that the result of llvm.rint matches the result of libm rint() call. Next, LangRef states that llvm.rint "returns the operand rounded to the nearest integer."...

Hi Cameron, Thank you for the comments, but I am confused even more now ☺ > llvm.rint won't honor the FPEnv in all cases. It falls under the default FPEnv The default FPEnv section specifies round-to-nearest rounding mode. In this case, how is it correct to map rint() user call to llvm.rint intrinsic call? If this is just a temporary inconsistency, and the long term solution i...

...eed at arm.com > > wrote: > > > > > > > | LLVM does not currently have special lowering handling for round(), > | and > I'll propose a patch to add that, but the larger question is this: > should > fast-math change the tie-breaking behavior of > | rint/nearbyint/round, etc. and, if so, should we make a specific > | effort to > have all backends provide the same guarantee (or lack of a guarantee) > in > this regard? > > I don't know, primarily because I've never really been involved in > anything > where I've c...

...1" is missing, with no default I only changed the parameters, how come the lambda1 that is not missing in the first 2 cases suddently become missing? For your convenience, I put the complete code below: Best Wishes Yuchen Luo ######################################## rm(list = ls()) mat=5 rint=c(4.33,4.22,4.27,4.43,4.43,4.44,4.45,4.65,4.77,4.77) tot=rep(13319.17,10) sh=rep(1553656,10) sigmae=c(0.172239074,0.188209271,0.193703774,0.172659891,0.164427247,0.24602361,0.173555309,0.186701165,0.193150456, 0.1857315601) ss=c(56.49,56.39,56.55,57.49,57.37,55.02,56.02,54.35,54.09, 54.67) orange=r...

...ri, Jun 21, 2013 at 7:54 AM, David Tweed <david.tweed at arm.com> wrote: > | LLVM does not currently have special lowering handling for round(), and > I'll propose a patch to add that, but the larger question is this: should > fast-math change the tie-breaking behavior of > | rint/nearbyint/round, etc. and, if so, should we make a specific effort > to > have all backends provide the same guarantee (or lack of a guarantee) in > this regard? > > I don't know, primarily because I've never really been involved in anything > where I've cared about us...

...7:54 AM, David Tweed <david.tweed at arm.com> wrote: > >> | LLVM does not currently have special lowering handling for round(), and >> I'll propose a patch to add that, but the larger question is this: should >> fast-math change the tie-breaking behavior of >> | rint/nearbyint/round, etc. and, if so, should we make a specific effort >> to >> have all backends provide the same guarantee (or lack of a guarantee) in >> this regard? >> >> I don't know, primarily because I've never really been involved in >> anything >&...

I am coding with vorbis using mingw32 (g++ for win32 without the cygwin.dll dependency). mingw32's math library does not support rint and I can't find a replacement so I have tried the following: Use Cygwin to execute ./configure. Then: (1) "make" with Cygwin - ok. Cygwin supports rint. I encode my Aerosmith's "Get A Grip" .wav from the CD to .ogg with encoder_example.exe. grip.ogg file size is 5...

Hello, I recently attempted to build theora 1.1.1 with mingw-w64-gcc 7.1 and msys and it fails to build the encoder_example.c example program. There are multiple declarations of the function 'rint'. The source file created its own version of the function that rounds AWAY from zero. MinGW-W64 has its own version of the 'rint' function, which does not round away from zero. Therefore, encoder_example.c's rint function is necessary, but needs to be renamed because it includes...

> > The only issue I see is that since we also assume FP operations have no > side effects by default there is no difference between llvm.rint and > llvm.nearbyint. I wouldn’t have a problem with dropping llvm.rint > completely. The forthcoming C standard ( http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2454.pdf, 7.12.9.8) defines new function, `roundeven`, which implements IEEE-754 operation `roundToIntegralTiesToEven`. When co...

> > One concern with replacing llvm.rint and llvm.nearbyint with > llvm.roundeven makes it difficult to turn back into a libcall if the > backend doesn't have an instruction for it. You can't just call the > roundeven library function since that wouldn't exist in older libm > implementations. So ideally you would k...

Some clarification after getting feedback from Craig Topper…. It’s probably best to say in the documentation that the llvm.nearbyint and llvm.rint functions “assume the default rounding mode, roundToNearest”. This will allow the optimizer to transform them as if they were rounding to nearest without requiring backends to use an encoding that enforces roundToNearest as the rounding mode for these operations. On modern x86 targets we can encode...

...provide info about current FP environment and have attribute `IntrInaccessibleMemOnly` that helps keeping order of operations that access FP environment. Non-constrained intrinsics are considered as working solely in default FP environment. This approach has issues when applied to the intrinsics `rint` and `nearbyint`. Value returned by either of these intrinsics depends on current rounding mode. If they are considered as operation in default environment, they would round only to nearest. It is by far not the meaning of the standard C functions that these intrinsics represent. So the unconstrai...

...; LLVM in default mode assumes that the current rounding mode is the > default rounding mode. But the same holds true for many other > intrinsics and even the arithmetic IR operations like add. Any other intrinsic, like `floor`, `round` etc has meaning at default rounding mode. But use of `rint` or `nearbyint` in default FP environment is strange, `roundeven` can be used instead. We could use more general intrinsics in all cases, as the special case of default environment is not of practical interest. There is another reason for special handling. Set of intrinsics includes things like `x...

...3 +++++++++++++++++++++++++++++---------------- lib/is-state.c | 2 +- 2 files changed, 61 insertions(+), 34 deletions(-) diff --git a/generator/generator b/generator/generator index 2cd83f1..bb3a1b5 100755 --- a/generator/generator +++ b/generator/generator @@ -873,6 +873,7 @@ and ret = | RInt (* return a small int, -1 = error *) | RInt64 (* 64 bit int, -1 = error *) | RString (* return a newly allocated string, caller frees *) +| RUInt (* return a bitmask, no error possible *) and permitted_state = | Created...

Hello, Sometime over the last few months, I implemented in the PowerPC backend a fast-math-only optimization which lowers ISD::FRINT/FNEARBYINT in terms of the frin instruction (when supported). As one of my users has pointed out to me, frin actually implements the semantics of round() [it ties away from zero] instead of implementing nearbyint() [which ties to even]. This user has additionally pointed out that LLVM on x86 does n...

...; cbargs : cbarg list; (** all closures return int for now *) > diff --git a/generator/C.ml b/generator/C.ml > index 6b65f6e..1eb5e85 100644 > --- a/generator/C.ml > +++ b/generator/C.ml > @@ -66,15 +66,15 @@ let errcode_of_ret = > function > | RBool | RErr | RFd | RInt | RInt64 | RCookie -> Some "-1" > | RStaticString | RString -> Some "NULL" > - | RUInt -> None (* errors not possible *) > + | RUInt | REnum (_) | RFlags (_) -> None (* errors not possible *) > > let type_of_ret = > function > - | RBoo...

I'm trying to link against libvorbis.a using GnuWin32 without the Cygwin layer (that is, Mingw32). Unfortunately the linker complains about a missing function: rint(). This function is used a couple of times in libvorbis and as far as I understand this is a standard C library function. My problem is, that I cannot find rint() in any of the common DLLs nor do I know how MSVC resolves this function. Any ideas????? br, Florian --- >8 ---- List archives: ht...

...16 reads had to change "unsigned _G_int32_t" to "_G_uint32_t" to resolve the compile error: ..\include\vorbis\os_types.h:36:parse error before 'ogg_uint32_t' ..\include\vorbis\os_types.h:36:warning:data definition has no type or storage class ince mingw doesn't have rint I added: "#define rint(x) floor((x) + 0.5) to my math.h this works for all but psytune.c where floor is used as a variable name. An error occurs when using rint (or floor()) from within the same scope as the floor variable. I renamed the variable to floor_var. So perhaps the _G_uint32_t co...

...d ret = | RCookie | RString | RUInt +| REnum of enum +| RFlags of flags and closure = { cbname : string; cbargs : cbarg list; @@ -442,7 +444,7 @@ test whether this is the case with L<nbd_supports_tls(3)>."; "get_tls", { default_call with - args = []; ret = RInt; + args = []; ret = REnum (tls_enum); may_set_error = false; shortdesc = "get the TLS request setting"; longdesc = "\ @@ -678,7 +680,7 @@ Future NBD extensions may add further flags. "get_handshake_flags", { default_call with - args = []; ret =...

Hi people, I fixed the problem by renaming the function and every instance of 'rint' to 'rint_az' (Round Int Away from Zero) and then encoder_example.c built successfully. Don't know if this needs to be patched upstream or not. Edgar On 6/1/2017 2:53 PM, Edgar Reynaldo wrote: > Hello, > > I recently attempted to build theora 1.1.1 with mingw-w64-gcc...