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Add more tests for corner cases of log1p and expm1. Add handling of infinite arguments to log1p such that log1p(inf) = inf.

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This commit is contained in:
Rasmus Munk Larsen
2019-08-28 12:20:21 -07:00
parent 6e77f9bef3
commit 1187bb65ad
3 changed files with 17 additions and 3 deletions
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14
test/packetmath.cpp
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@@ -607,8 +607,12 @@ template<typename Scalar,typename Packet> void packetmath_real()
CHECK_CWISE1_IF(internal::packet_traits<Scalar>::HasLGamma, std::lgamma, internal::plgamma);
CHECK_CWISE1_IF(internal::packet_traits<Scalar>::HasErf, std::erf, internal::perf);
CHECK_CWISE1_IF(internal::packet_traits<Scalar>::HasErfc, std::erfc, internal::perfc);
CHECK_CWISE1_IF(PacketTraits::HasExpm1, std::expm1, internal::pexpm1);
data1[0] = std::numeric_limits<Scalar>::infinity();
data1[1] = Scalar(-1);
CHECK_CWISE1_IF(PacketTraits::HasLog1p, std::log1p, internal::plog1p);
data1[0] = std::numeric_limits<Scalar>::infinity();
data1[1] = -std::numeric_limits<Scalar>::infinity();
CHECK_CWISE1_IF(PacketTraits::HasExpm1, std::expm1, internal::pexpm1);
#endif
if(PacketSize>=2)
@@ -648,6 +652,14 @@ template<typename Scalar,typename Packet> void packetmath_real()
h.store(data2, internal::plog(h.load(data1)));
VERIFY((numext::isinf)(data2[0]));
}
if(PacketTraits::HasLog1p) {
packet_helper<PacketTraits::HasLog1p,Packet> h;
data1[0] = Scalar(-2);
data1[1] = -std::numeric_limits<Scalar>::infinity();
h.store(data2, internal::plog1p(h.load(data1)));
VERIFY((numext::isnan)(data2[0]));
VERIFY((numext::isnan)(data2[1]));
}
if(PacketTraits::HasSqrt)
{
packet_helper<PacketTraits::HasSqrt,Packet> h;