================
@@ -0,0 +1,309 @@
+// RUN: %clang_cc1 -fexperimental-new-constant-interpreter -verify -std=c++20
%s
+// RUN: %clang_cc1 -verify -std=c++20 %s
+
+
+
+static_assert(__builtin_nearbyint(1.1) == 1.0);
+static_assert(__builtin_nearbyint(1.9) == 2.0);
+static_assert(__builtin_nearbyint(-1.1) == -1.0);
+static_assert(__builtin_nearbyint(-1.9) == -2.0);
+
+static_assert(__builtin_nearbyintf(1.1f) == 1.0f);
+static_assert(__builtin_nearbyintl(1.1l) == 1.0l);
+static_assert(__builtin_nearbyintf16(1.1f16) == 1.0f16);
+static_assert(__builtin_nearbyintf128(1.1) == 1.0);
+static_assert(__builtin_isnan(__builtin_nearbyint(__builtin_nan(""))));
+static_assert(__builtin_isinf(__builtin_nearbyint(__builtin_inf())));
+
+// Test ties to even (default rounding mode)
+static_assert(__builtin_nearbyint(1.5) == 2.0);
+static_assert(__builtin_nearbyint(2.5) == 2.0);
+
+// rint tests
+static_assert(__builtin_rint(1.1) == 1.0);
+static_assert(__builtin_rint(1.9) == 2.0);
+static_assert(__builtin_rintf(1.1f) == 1.0f);
+static_assert(__builtin_rintl(1.1l) == 1.0l);
+static_assert(__builtin_rintf16(1.1f16) == 1.0f16);
+static_assert(__builtin_rintf128(1.1) == 1.0);
+static_assert(__builtin_isnan(__builtin_rint(__builtin_nan(""))));
+static_assert(__builtin_isinf(__builtin_rint(__builtin_inf())));
+
+// lrint tests
+static_assert(__builtin_lrint(1.1) == 1);
+static_assert(__builtin_lrint(1.9) == 2);
+static_assert(__builtin_lrintf(1.1f) == 1);
+static_assert(__builtin_lrintl(1.1l) == 1);
+static_assert(__builtin_lrintf128(1.1) == 1);
+
+// llrint tests
+static_assert(__builtin_llrint(1.1) == 1LL);
+static_assert(__builtin_llrint(1.9) == 2LL);
+static_assert(__builtin_llrintf(1.1f) == 1LL);
+static_assert(__builtin_llrintl(1.1l) == 1LL);
+static_assert(__builtin_llrintf128(1.1) == 1LL);
+
+// round tests
+static_assert(__builtin_round(1.1) == 1.0);
+static_assert(__builtin_round(1.5) == 2.0);
+static_assert(__builtin_round(1.9) == 2.0);
+static_assert(__builtin_round(-1.5) == -2.0);
+static_assert(__builtin_roundf16(1.5f16) == 2.0f16);
+static_assert(__builtin_roundf128(1.5) == 2.0);
+static_assert(__builtin_isnan(__builtin_round(__builtin_nan(""))));
+static_assert(__builtin_isinf(__builtin_round(__builtin_inf())));
+
+// lround tests
+static_assert(__builtin_lround(1.1) == 1);
+static_assert(__builtin_lround(1.5) == 2);
+static_assert(__builtin_lround(-1.5) == -2);
+static_assert(__builtin_lroundf128(1.5) == 2);
+
+// llround tests
+static_assert(__builtin_llround(1.1) == 1LL);
+static_assert(__builtin_llround(1.5) == 2LL);
+static_assert(__builtin_llround(-1.5) == -2LL);
+static_assert(__builtin_llroundf128(1.5) == 2LL);
+
+// ceil tests
+static_assert(__builtin_ceil(1.1) == 2.0);
+static_assert(__builtin_ceil(-1.1) == -1.0);
+static_assert(__builtin_ceilf(1.1f) == 2.0f);
+static_assert(__builtin_ceilf16(1.1f16) == 2.0f16);
+static_assert(__builtin_ceilf128(1.1) == 2.0);
+static_assert(__builtin_isnan(__builtin_ceil(__builtin_nan(""))));
+static_assert(__builtin_isinf(__builtin_ceil(__builtin_inf())));
+
+// floor tests
+static_assert(__builtin_floor(1.1) == 1.0);
+static_assert(__builtin_floor(-1.1) == -2.0);
+static_assert(__builtin_floorf(1.1f) == 1.0f);
+static_assert(__builtin_floorf16(1.1f16) == 1.0f16);
+static_assert(__builtin_floorf128(1.1) == 1.0);
+static_assert(__builtin_isnan(__builtin_floor(__builtin_nan(""))));
+static_assert(__builtin_isinf(__builtin_floor(__builtin_inf())));
+
+// trunc tests
+static_assert(__builtin_trunc(1.1) == 1.0);
+static_assert(__builtin_trunc(-1.1) == -1.0);
+static_assert(__builtin_truncf(1.1f) == 1.0f);
+static_assert(__builtin_truncf16(1.1f16) == 1.0f16);
+static_assert(__builtin_truncf128(1.1) == 1.0);
+static_assert(__builtin_isnan(__builtin_trunc(__builtin_nan(""))));
+static_assert(__builtin_isinf(__builtin_trunc(__builtin_inf())));
+
+// roundeven tests
+static_assert(__builtin_roundeven(1.5) == 2.0);
+static_assert(__builtin_roundeven(2.5) == 2.0);
+static_assert(__builtin_roundeven(-1.5) == -2.0);
+static_assert(__builtin_roundeven(-2.5) == -2.0);
+static_assert(__builtin_roundevenf(1.5f) == 2.0f);
+static_assert(__builtin_roundevenl(1.5l) == 2.0l);
+static_assert(__builtin_roundevenf128(1.5) == 2.0);
+static_assert(__builtin_roundeven(0.5) == 0.0);
+static_assert(__builtin_roundeven(-0.5) == -0.0);
+static_assert(__builtin_isnan(__builtin_roundeven(__builtin_nan(""))));
+static_assert(__builtin_isinf(__builtin_roundeven(__builtin_inf())));
+
+// fdim tests
+static_assert(__builtin_fdim(3.0, 1.0) == 2.0);
+static_assert(__builtin_fdim(1.0, 3.0) == 0.0);
+static_assert(__builtin_fdimf(3.0f, 1.0f) == 2.0f);
+static_assert(__builtin_fdimf128(3.0, 1.0) == 2.0);
+static_assert(__builtin_isnan(__builtin_fdim(__builtin_nan(""), 1.0)));
+static_assert(__builtin_isnan(__builtin_fdim(1.0, __builtin_nan(""))));
+static_assert(__builtin_isinf(__builtin_fdim(__builtin_inf(), 0.0)));
+static_assert(__builtin_fdim(__builtin_inf(), __builtin_inf()) == 0.0);
----------------
AaronBallman wrote:
> @Serosh-commits, let's see how things look as the other comments get
> addressed first. If the issues are restricted to manifestly-constant
> evaluated cases where a floating-point result is NaN or infinity, then I
> think I would not be too concerned about the possibility of a Clang release
> where the error cases evaluate "successfully".
>
> @shafik @AaronBallman, do you agree with my sentiments above re: acceptable
> release quality?
I'm not certain I trust my intuition, so I'll ask a perhaps silly question:
what are the chances that causes template instantiation problems when used for
things like type traits in the STL? e.g., do we have to worry about people
specializing on `std::isfinite` and the specialization behavior will quietly
change out from under them? CC @jcranmer-intel who may also have a better idea
than me on fallout.
(I'm not opposed to going this route, just double-checking there's not a big
chance for silent ABI breaking changes kind of disruption.)
https://github.com/llvm/llvm-project/pull/194327
_______________________________________________
cfe-commits mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
