diff options
Diffstat (limited to 'src/core/utils/quantization/AsymmHelpers.cpp')
-rw-r--r-- | src/core/utils/quantization/AsymmHelpers.cpp | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/src/core/utils/quantization/AsymmHelpers.cpp b/src/core/utils/quantization/AsymmHelpers.cpp index f923518ca4..8e0e92c7ab 100644 --- a/src/core/utils/quantization/AsymmHelpers.cpp +++ b/src/core/utils/quantization/AsymmHelpers.cpp @@ -36,7 +36,7 @@ namespace quantization constexpr int64_t fixed_point_one_Q0 = (1LL << 31); constexpr float epsilon = 0.00001f; -Status calculate_quantized_multiplier(float multiplier, int32_t *quant_multiplier, int32_t *shift) +Status calculate_quantized_multiplier(float multiplier, int32_t *quant_multiplier, int32_t *shift, bool ignore_epsilon) { if(multiplier >= 1.f) { @@ -46,19 +46,22 @@ Status calculate_quantized_multiplier(float multiplier, int32_t *quant_multiplie } else { - return calculate_quantized_multiplier_less_than_one(multiplier, quant_multiplier, shift); + return calculate_quantized_multiplier_less_than_one(multiplier, quant_multiplier, shift, ignore_epsilon); } } Status calculate_quantized_multiplier_less_than_one(float multiplier, int32_t *quant_multiplier, - int32_t *right_shift) + int32_t *right_shift, + bool ignore_epsilon) { + const float internal_epsilon = ignore_epsilon ? 0.0f : epsilon; + ARM_COMPUTE_RETURN_ERROR_ON(quant_multiplier == nullptr); ARM_COMPUTE_RETURN_ERROR_ON(right_shift == nullptr); - ARM_COMPUTE_RETURN_ERROR_ON(multiplier < -epsilon); - ARM_COMPUTE_RETURN_ERROR_ON(multiplier > 1.0f + epsilon); - if(std::fabs(0.0f - multiplier) < epsilon) + ARM_COMPUTE_RETURN_ERROR_ON(multiplier < -internal_epsilon); + ARM_COMPUTE_RETURN_ERROR_ON(multiplier > 1.0f + internal_epsilon); + if(std::fabs(0.0f - multiplier) < internal_epsilon) { *quant_multiplier = 0; *right_shift = 0; @@ -75,6 +78,13 @@ Status calculate_quantized_multiplier_less_than_one(float multiplier, q_fixed /= 2; --*right_shift; } + + if(ignore_epsilon && *right_shift > 31) + { + *right_shift = 0; + q_fixed = 0; + } + ARM_COMPUTE_RETURN_ERROR_ON(*right_shift < 0); ARM_COMPUTE_RETURN_ERROR_ON(q_fixed > std::numeric_limits<int32_t>::max()); *quant_multiplier = static_cast<int32_t>(q_fixed); |