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79c52daf47
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. |
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| .. | ||
| bits | ||
| sparc32 | ||
| sparc64 | ||
| sys | ||
| a.out.h | ||
| aio_cancel.c | ||
| brk_call.h | ||
| configure | ||
| configure.ac | ||
| dl-cache.h | ||
| errlist-compat-data.h | ||
| getrlimit64.c | ||
| getshmlba.c | ||
| Implies | ||
| kernel-features.h | ||
| kernel_sigaction.h | ||
| kernel_termios.h | ||
| ldd-rewrite.sed | ||
| librt-compat.c | ||
| Makefile | ||
| profil-counter.h | ||
| readelflib.c | ||
| rt-sysdep.c | ||
| socket-constants-time64.h | ||
| struct_kernel_shmid64_ds.h | ||
| sysdep.c | ||
| sysdep.h | ||
| Versions | ||
| xstatver.h | ||