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Maciej W. Rozycki 963d6c79ea RISC-V: Fix floating-point environment support for soft float 
We don't have floating-point exception or non-default rounding mode
support for the RISC-V soft-float environment, `feraiseexcept' and
`fesetround' do nothing unless the `__riscv_flen' macro has been set.
Therefore following ISO C language requirements[1] only define macros
for soft float that correspond to actually supported floating-point
environment features, removing failures from GCC testing such as:

FAIL: gcc.dg/torture/fp-int-convert-timode-3.c   -O0  execution test
FAIL: gcc.dg/torture/fp-int-convert-timode-4.c   -O0  execution test

References:

[1] "Programming languages -- C", ISO/IEC 9899:2023, working draft --
    September 3, 2022, Section 7.6 "Floating-point environment <fenv.h>"

Fixes: 7040b2de08 ("Add RISC-V port for libm")
Signed-off-by: Maciej W. Rozycki <macro@embecosm.com>
 		2023-01-27 14:25:44 +01:00
..
asm.h Change license to FreeBSD License for RISC-V 2017-08-21 11:08:54 +02:00
fenv.h RISC-V: Fix floating-point environment support for soft float 2023-01-27 14:25:44 +01:00
string.h Change license to FreeBSD License for RISC-V 2017-08-21 11:08:54 +02:00