From 29db3d293302254b80e82651895d997ca145142a Mon Sep 17 00:00:00 2001 From: Viet-Hoa Do Date: Wed, 10 Aug 2022 11:56:49 +0100 Subject: Add LUT for quantized sigmoid function * Move LUT implementation to a seperate file. It will be used for both QASYMM8 and QASYMM8_SIGNED. * Fix wrong constant value related to QASYMM8_SIGNED leaky ReLU in 32-bit build. Resolves: COMPMID-5464 Signed-off-by: Viet-Hoa Do Change-Id: I2b24d52409a38f1b66fd532f431eff8a9e4547b6 Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/8066 Comments-Addressed: Arm Jenkins Reviewed-by: Gunes Bayir Tested-by: Arm Jenkins Benchmark: Arm Jenkins --- arm_compute/core/QuantizationInfo.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'arm_compute/core/QuantizationInfo.h') diff --git a/arm_compute/core/QuantizationInfo.h b/arm_compute/core/QuantizationInfo.h index 21d962d08b..ed1025edc0 100644 --- a/arm_compute/core/QuantizationInfo.h +++ b/arm_compute/core/QuantizationInfo.h @@ -420,6 +420,26 @@ inline qasymm8_t qasymm8_leaky_relu(qasymm8_t in, return tmp; } +inline qasymm8_t qasymm8_logistic(qasymm8_t in, + const UniformQuantizationInfo &qi_in, + const UniformQuantizationInfo &qi_out) +{ + float tmp_f = dequantize_qasymm8(in, qi_in); + tmp_f = 1.f / (1.f + std::exp(-tmp_f)); + const qasymm8_t tmp = quantize_qasymm8(tmp_f, qi_out); + return tmp; +} + +inline qasymm8_signed_t qasymm8_signed_logistic(qasymm8_signed_t in, + const UniformQuantizationInfo &qi_in, + const UniformQuantizationInfo &qi_out) +{ + float tmp_f = dequantize_qasymm8_signed(in, qi_in); + tmp_f = 1.f / (1.f + std::exp(-tmp_f)); + const qasymm8_signed_t tmp = quantize_qasymm8_signed(tmp_f, qi_out); + return tmp; +} + /** Dequantize a value given a 8-bit symmetric quantization scheme * * @param[in] value Value to dequantize -- cgit v1.2.1