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 <viet-hoa.do@arm.com>
Change-Id: I2b24d52409a38f1b66fd532f431eff8a9e4547b6
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/8066
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gunes Bayir <gunes.bayir@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Benchmark: Arm Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/core/QuantizationInfo.h b/arm_compute/core/QuantizationInfo.h
index 21d962d..ed1025e 100644
--- a/arm_compute/core/QuantizationInfo.h
+++ b/arm_compute/core/QuantizationInfo.h
@@ -420,6 +420,26 @@
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