forked from M-Labs/nalgebra
20 lines
553 B
Rust
20 lines
553 B
Rust
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#[cfg(feature="arbitrary")]
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use quickcheck::{Arbitrary, Gen};
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use rand::{Rand, Rng};
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/// Simple helper function for rejection sampling
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#[cfg(feature="arbitrary")]
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#[doc(hidden)]
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#[inline]
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pub fn reject<G: Gen, F: FnMut(&T) -> bool, T: Arbitrary>(g: &mut G, f: F) -> T {
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use std::iter;
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iter::repeat(()).map(|_| Arbitrary::arbitrary(g)).find(f).unwrap()
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}
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#[doc(hidden)]
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#[inline]
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pub fn reject_rand<G: Rng, F: FnMut(&T) -> bool, T: Rand>(g: &mut G, f: F) -> T {
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use std::iter;
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iter::repeat(()).map(|_| Rand::rand(g)).find(f).unwrap()
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}
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