diff options
Diffstat (limited to 'ruy/apply_multiplier.cc')
| -rw-r--r-- | ruy/apply_multiplier.cc | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/ruy/apply_multiplier.cc b/ruy/apply_multiplier.cc index 200d1c0..1b7df5c 100644 --- a/ruy/apply_multiplier.cc +++ b/ruy/apply_multiplier.cc @@ -24,6 +24,10 @@ namespace ruy { namespace detail { namespace { +// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! +// Warning: this code is not meant to be bit-exact-normative. +// Please refer to the class comment of ruy::MulParams, in mul_params.h. +// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! // Copied from gemmlowp/fixedpoint. // Similar to the ARM64 instruction, SQRDMULH. The name of this function // is copied from the name of that instruction. @@ -43,6 +47,10 @@ std::int32_t SaturatingRoundingDoublingHighMul(std::int32_t a, std::int32_t b) { return overflow ? std::numeric_limits<std::int32_t>::max() : ab_x2_high32; } +// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! +// Warning: this code is not meant to be bit-exact-normative. +// Please refer to the class comment of ruy::MulParams, in mul_params.h. +// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! // Returns numerator/2^exponent, rounding to nearest, breaking ties // upwards. That particular tie-breaking behavior is not important in practice. // It happens to be cheap to implement in hardware and therefore, commonplace. @@ -71,6 +79,10 @@ std::int32_t RoundingRightShift(std::int32_t numerator, int exponent) { } // namespace +// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! +// Warning: this code is not meant to be bit-exact-normative. +// Please refer to the class comment of ruy::MulParams, in mul_params.h. +// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! // Copied from TF Lite code. std::int32_t MultiplyByQuantizedMultiplier(std::int32_t x, std::int32_t quantized_multiplier, |