libdfp: Remove test-samequantum.c
libdfp: fpclassidyd typo
libdfp: Add support for sinal + in test script
libdfp: Adapt quantize test to new framework
libdfp: Remove unnecessary tests

This patch remove test-GCC-PR52140 (already covered by GCC), test-negate
and test-param.c (also covered by GCC), and test-stdlib.c.
libdfp: Name change for test-round.c

This patch changes the name of test-round.c to test-fenv.c (showing
it is indeed testing rounding related to fenv) and add some minor
cleaups in the code.
libdfp: Add entry point for shared-libraries

This patch adds a entry point function to print useful information
when the libdfp shared library is called directly.
libdfp: Remove tests
libdfp: Add round functions input

This patch fixes the sNaN input to NaN instead of sNaN.
libdfp: Add HUGE_VAL_D32 and HUGE_VAL_D128
libdfp: fix type in round.input
libdfp: Format test-decode
libdfp: Fix test-getexp constant
libdfp: Remove unused constant from test-numdigit
libdfp: Remove compiler warning when including scaffold.c
libdfp: Add support to ULPs file in new test framwork

This patch support to specificy ULPs files for each test. ULPs file sare
generated by decimal type by script tests/gen-libdfp-ulps.py. Input
files are defined by arch/hardware support (for instance
sysdeps/powerpc/dfpu/libdfp-test-ulps).
libdfp: Adapt exp to new test framework
libdpf: Adapt log10 to new test framework