1; log1p.tst 2; 3; Copyright (c) 2009-2023, Arm Limited. 4; SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception 5 6func=log1p op1=7ff80000.00000001 result=7ff80000.00000001 errno=0 7func=log1p op1=fff80000.00000001 result=7ff80000.00000001 errno=0 8func=log1p op1=7ff00000.00000001 result=7ff80000.00000001 errno=0 status=i 9func=log1p op1=fff00000.00000001 result=7ff80000.00000001 errno=0 status=i 10func=log1p op1=fff02000.00000000 result=7ff80000.00000001 errno=0 status=i 11func=log1p op1=7ff00000.00000000 result=7ff00000.00000000 errno=0 12; Cases 6, 9 , 10, 11, 12 fail with certain versions of GLIBC and not others. 13; The main reason seems to be the handling of errno and exceptions. 14 15func=log1p op1=00000000.00000000 result=00000000.00000000 errno=0 16func=log1p op1=80000000.00000000 result=80000000.00000000 errno=0 17 18; No exception is raised with certain versions of glibc. Functions 19; approximated by x near zero may not generate/implement flops and 20; thus may not raise exceptions. 21func=log1p op1=00000000.00000001 result=00000000.00000001 errno=0 maybestatus=ux 22func=log1p op1=80000000.00000001 result=80000000.00000001 errno=0 maybestatus=ux 23