#266: reduce Miri test count in round.rs

Author: RalfJung

crates/core_simd/tests/round.rs

@@ -59,7 +59,7 @@ macro_rules! float_rounding_test {
                     const MAX_REPRESENTABLE_VALUE: Scalar =
                         (ALL_MANTISSA_BITS << (core::mem::size_of::<Scalar>() * 8 - <Scalar>::MANTISSA_DIGITS as usize - 1)) as Scalar;
 
-                    let mut runner = proptest::test_runner::TestRunner::default();
+                    let mut runner = test_helpers::make_runner();
                     runner.run(
                         &test_helpers::array::UniformArrayStrategy::new(-MAX_REPRESENTABLE_VALUE..MAX_REPRESENTABLE_VALUE),
                         |x| {

crates/test_helpers/src/lib.rs

@@ -78,11 +78,11 @@ impl<T: core::fmt::Debug + DefaultStrategy, const LANES: usize> DefaultStrategy
 }
 
 #[cfg(not(miri))]
-fn make_runner() -> proptest::test_runner::TestRunner {
+pub fn make_runner() -> proptest::test_runner::TestRunner {
     Default::default()
 }
 #[cfg(miri)]
-fn make_runner() -> proptest::test_runner::TestRunner {
+pub fn make_runner() -> proptest::test_runner::TestRunner {
     // Only run a few tests on Miri
     proptest::test_runner::TestRunner::new(proptest::test_runner::Config::with_cases(4))
 }