From: Performance Analysis of Bit-Width Reduced Floating-Point Arithmetic Units in FPGAs: A Case Study of Neural Network-Based Face Detector
Bit-width
Unit
Range
MRRE(ulp)
ARRE
FPU32
2, 8, 23
FPU24
2, 6, 17
FPU20
2, 6, 13
FPU16
2, 6, 9
FPU12
2, 6, 5