C23 adds various <math.h> function families originally defined in TS
18661-4. Add the logp1 functions (aliases for log1p functions - the
name is intended to be more consistent with the new log2p1 and
log10p1, where clearly it would have been very confusing to name those
functions log21p and log101p). As aliases rather than new functions,
the content of this patch is somewhat different from those actually
adding new functions.
Tests are shared with log1p, so this patch *does* mechanically update
all affected libm-test-ulps files to expect the same errors for both
functions.
The vector versions of log1p on aarch64 and x86_64 are *not* updated
to have logp1 aliases (and thus there are no corresponding header,
tests, abilist or ulps changes for vector functions either). It would
be reasonable for such vector aliases and corresponding changes to
other files to be made separately. For now, the log1p tests instead
avoid testing logp1 in the vector case (a Makefile change is needed to
avoid problems with grep, used in generating the .c files for vector
function tests, matching more than one ALL_RM_TEST line in a file
testing multiple functions with the same inputs, when it assumes that
the .inc file only has a single such line).
Tested for x86_64 and x86, and with build-many-glibcs.py.
I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.
I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah. I don't
know why I run into these diagnostics whereas others evidently do not.
remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
With mathinline removal there is no need to keep building and testing
inline math tests.
The gen-libm-tests.py support to generate ULP_I_* is removed and all
libm-test-ulps files are updated to longer have the
i{float,double,ldouble} entries. The support for no-test-inline is
also removed from both gen-auto-libm-tests and the
auto-libm-test-out-* were regenerated.
Checked on x86_64-linux-gnu and i686-linux-gnu.
Continuing moving macros out of math-tests.h to smaller headers
following typo-proof conventions instead of using #ifndef, this patch
moves the EXCEPTION_TESTS_* macros for individual types out to their
own sysdeps header.
As with ROUNDING_TESTS_*, there is no need to define these macros if
FE_ALL_EXCEPT == 0 and the individual exception macros are undefined;
thus, math-tests-exceptions.h headers are only needed for soft-float
ARM and RISC-V, while the other cases that defined these macros do not
need to do so (and the associated math-tests.h headers are thus
removed without needing replacement by math-tests-exceptions.h
headers).
Tested with build-many-glibcs.py.
* sysdeps/generic/math-tests-exceptions.h: New file.
* sysdeps/generic/math-tests.h: Include <math-tests-exceptions.h>.
(EXCEPTION_TESTS_float): Do not define here.
(EXCEPTION_TESTS_double): Likewise.
(EXCEPTION_TESTS_long_double): Likewise.
(EXCEPTION_TESTS_float128): Likewise.
* sysdeps/arm/math-tests.h [__SOFTFP__] (EXCEPTION_TESTS_float):
Likewise.
[__SOFTFP__] (EXCEPTION_TESTS_double): Likewise.
[__SOFTFP__] (EXCEPTION_TESTS_long_double): Likewise.
* sysdeps/arm/nofpu/math-tests-exceptions.h: New file.
* sysdeps/m68k/coldfire/math-tests.h: Remove file.
* sysdeps/mips/math-tests.h: Likewise.
* sysdeps/nios2/math-tests.h: Likewise.
* sysdeps/riscv/math-tests.h [!__riscv_flen]
(EXCEPTION_TESTS_float): Do not define here.
[!__riscv_flen] (EXCEPTION_TESTS_double): Likewise.
[!__riscv_flen] (EXCEPTION_TESTS_long_double): Likewise.
* sysdeps/riscv/nofpu/math-tests-exceptions.h: New file.
Continuing moving macros out of math-tests.h to smaller headers
following typo-proof conventions instead of using #ifndef, this patch
moves the ROUNDING_TESTS_* macros for individual types out to their
own sysdeps header.
In the soft-float case where FE_TONEAREST is the only rounding mode
macro defined, there is no need to define ROUNDING_TESTS_*; it is only
necessary when rounding modes macros are defined that may not be
supported at runtime. Thus, the ROUNDING_TESTS_* definitions for some
configurations are just removed, not moved to new
math-tests-rounding.h headers; the only architectures needing
math-tests-rounding.h are those where the macros are defined in
bits/fenv.h because of the possibility of a soft-float compilation
using a hard-float glibc with the same ABI (i.e., ARM and RISC-V).
The test-*-vlen*.h headers, by using #undef, do not yet follow
typo-proof conventions (but they no longer implicitly rely on being
included before math-tests.h, and this area can always be cleaned up
further in future).
Tested with build-many-glibcs.py.
* sysdeps/generic/math-tests-rounding.h: New file.
* sysdeps/generic/math-tests.h: Include <math-tests-rounding.h>.
(ROUNDING_TESTS_float): Do not define here.
(ROUNDING_TESTS_double): Likewise.
(ROUNDING_TESTS_long_double): Likewise.
(ROUNDING_TESTS_float128): Likewise.
* math/test-double-vlen2.h: Include <math-tests-rounding.h>.
(ROUNDING_TESTS_double): Undefine before defining.
* math/test-double-vlen4.h: Include <math-tests-rounding.h>.
(ROUNDING_TESTS_double): Undefine before defining.
* math/test-double-vlen8.h: Include <math-tests-rounding.h>.
(ROUNDING_TESTS_double): Undefine before defining.
* math/test-float-vlen16.h: Include <math-tests-rounding.h>.
(ROUNDING_TESTS_float): Undefine before defining.
* math/test-float-vlen4.h: Include <math-tests-rounding.h>.
(ROUNDING_TESTS_float): Undefine before defining.
* math/test-float-vlen8.h: Include <math-tests-rounding.h>.
(ROUNDING_TESTS_float): Undefine before defining.
* sysdeps/arm/nofpu/math-tests-rounding.h: New file.
* sysdeps/arm/math-tests.h [__SOFTFP__] (ROUNDING_TESTS_float): Do
not define here.
[__SOFTFP__] (ROUNDING_TESTS_double): Likewise.
[__SOFTFP__] (ROUNDING_TESTS_long_double): Likewise.
* sysdeps/riscv/nofpu/math-tests-rounding.h: New file.
* sysdeps/riscv/math-tests.h [!__riscv_flen]
(ROUNDING_TESTS_float): Do not define here.
[!__riscv_flen] (ROUNDING_TESTS_double): Likewise.
[!__risv_flen] (ROUNDING_TESTS_long_double): Likewise.
* sysdeps/m68k/coldfire/math-tests.h [!__mcffpu__]
(ROUNDING_TESTS_float): Likewise.
[!__mcffpu__] (ROUNDING_TESTS_double): Likewise.
[!__mcffpu__] (ROUNDING_TESTS_long_double): Likewise.
* sysdeps/mips/math-tests.h [__mips_soft_float]
(ROUNDING_TESTS_float): Likewise.
[__mips_soft_float] (ROUNDING_TESTS_double): Likewise.
[__mips_soft_float] (ROUNDING_TESTS_long_double): Likewise.
* sysdeps/nios2/math-tests.h (ROUNDING_TESTS_float): Likewise.
(ROUNDING_TESTS_double): Likewise.
(ROUNDING_TESTS_long_double): Likewise.
I started with the aarch64 ABI lists and manually went through each
difference, ensuring that the missing entries had been deprecated along
the line. Darius generated the ulps files by running the test cases on QEMU.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/riscv/nofpu/libm-test-ulps: New file.
* sysdeps/riscv/nofpu/libm-test-ulps-name: Likewise.
* sysdeps/riscv/rv64/rvd/libm-test-ulps: Likewise.
* sysdeps/riscv/rv64/rvd/libm-test-ulps-name: Likewise.
* sysdeps/unix/sysv/linux/riscv/localplt.data: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/c++-types.data: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/ld.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libanl.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libdl.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libnsl.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/librt.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libutil.abilist: Likewise.
This patch contains the miscellaneous math routines and headers we have
implemented for RISC-V. This includes things from <math.h> that aren't
completely ISA-generic, floating-point bit manipulation, and soft-fp
hooks.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/riscv/bits/fenv.h: New file.
* sysdeps/riscv/e_sqrtl.c: Likewise.
* sysdeps/riscv/fpu_control.h: Likewise.
* sysdeps/riscv/math-tests.h: Likewise.
* sysdeps/riscv/nofpu/Implies: Likewise.
* sysdeps/riscv/sfp-machine.h: Likewise.
* sysdeps/riscv/tininess.h: Likewise.
Darius Rad
Joseph Myers
Paul Eggert
Joseph Myers
Adhemerval Zanella
Palmer Dabbelt