https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100174
Bug ID: 100174
Summary: Binary floating-point conversion under
source-gcc/gcc/real.[c\h] test on x86-64
Product: gcc
Version: 9.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: translation
Assignee: unassigned at gcc dot gnu.org
Reporter: 608410104 at alum dot ccu.edu.tw
Target Milestone: ---
For example: float a = 0.3333
I don't know why gcc using clear_significand_below(real.c) function to clear
remaining bits in sig[SIGSZ-1].
Why not just only truncated it by it need.
> Before clear sig[SIGSZ-1] = 01010101 01001100 10011000 01011111 00000110
> 11110110 10010100 0100011
> After clear sig[SIGSZ-1] = 01010101 01001100 10011000 00000000 00000000
> 00000000 00000000 0000000
Sorry if I am not clear, I will elaborate if this is still unclear.
