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[IE Common] Replace static_cast with saturated one (#1257)

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Andrew Bakalin 2020-07-10 11:20:17 +03:00 committed by GitHub
parent b4e3dd5c7b
commit 3a0f09c01e
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1 changed files with 16 additions and 1 deletions
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17
inference-engine/src/legacy_api/src/net_pass.cpp
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@ -1330,13 +1330,28 @@ bool UnrollRNN_if(TensorIterator::Body& net, const std::function<bool(const RNNC
namespace {
template <typename TO, typename FROM>
bool isConversionNarrowing(FROM from) {
return from == (static_cast<FROM>(static_cast<TO>(from)));
}
template <typename TO, typename FROM>
TO saturatedCast(FROM from) {
FROM max = isConversionNarrowing<FROM>(std::numeric_limits<TO>::max()) ? std::numeric_limits<FROM>::max() :
static_cast<FROM>(std::numeric_limits<TO>::max());
FROM min = isConversionNarrowing<FROM>(std::numeric_limits<TO>::min()) ? std::numeric_limits<FROM>::min() :
static_cast<FROM>(std::numeric_limits<TO>::min());
return static_cast<TO>(std::min(std::max(from, min), max));
}
template <Precision::ePrecision PREC_FROM, Precision::ePrecision PREC_TO>
void convertArrayPrecision(typename PrecisionTrait<PREC_TO>::value_type* dst,
const typename PrecisionTrait<PREC_FROM>::value_type* src, size_t nelem) {
using dst_type = typename PrecisionTrait<PREC_TO>::value_type;
for (size_t i = 0; i < nelem; i++) {
dst[i] = static_cast<dst_type>(src[i]);
dst[i] = saturatedCast<dst_type>(src[i]);
}
}