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| author | Joseph Myers <josmyers@redhat.com> | 2024-05-20 13:41:39 +0000 |
|---|---|---|
| committer | Joseph Myers <josmyers@redhat.com> | 2024-05-20 13:41:39 +0000 |
| commit | 79c52daf4740b00bef43e4f5a4281b3480459b38 (patch) | |
| tree | cc15e0f7402870b20dbebf8d539df033806d48b0 /math/gen-auto-libm-tests.c | |
| parent | cf0ca8d52e1653d4aa4311a4649af8dc541ce6b4 (diff) | |
| download | glibc-79c52daf4740b00bef43e4f5a4281b3480459b38.tar.gz glibc-79c52daf4740b00bef43e4f5a4281b3480459b38.tar.xz glibc-79c52daf4740b00bef43e4f5a4281b3480459b38.zip | |
Implement C23 log2p1
C23 adds various <math.h> function families originally defined in TS 18661-4. Add the log2p1 functions (log2(1+x): like log1p, but for base-2 logarithms). This illustrates the intended structure of implementations of all these function families: define them initially with a type-generic template implementation. If someone wishes to add type-specific implementations, it is likely such implementations can be both faster and more accurate than the type-generic one and can then override it for types for which they are implemented (adding benchmarks would be desirable in such cases to demonstrate that a new implementation is indeed faster). The test inputs are copied from those for log1p. Note that these changes make gen-auto-libm-tests depend on MPFR 4.2 (or later). The bulk of the changes are fairly generic for any such new function. (sysdeps/powerpc/nofpu/Makefile only needs changing for those type-generic templates that use fabs.) Tested for x86_64 and x86, and with build-many-glibcs.py.
Diffstat (limited to 'math/gen-auto-libm-tests.c')
| -rw-r--r-- | math/gen-auto-libm-tests.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/math/gen-auto-libm-tests.c b/math/gen-auto-libm-tests.c index c35242b356..d01ac71dbe 100644 --- a/math/gen-auto-libm-tests.c +++ b/math/gen-auto-libm-tests.c @@ -580,6 +580,7 @@ static test_function test_functions[] = FUNC_mpfr_f_f ("log10", mpfr_log10, false), FUNC_mpfr_f_f ("log1p", mpfr_log1p, false), FUNC_mpfr_f_f ("log2", mpfr_log2, false), + FUNC_mpfr_f_f ("log2p1", mpfr_log2p1, false), FUNC_mpfr_ff_f ("mul", mpfr_mul, true), FUNC_mpfr_ff_f ("pow", mpfr_pow, false), FUNC_mpfr_f_f ("sin", mpfr_sin, false), |