mirror of git://sourceware.org/git/glibc.git
ae31254432
C23 adds various <math.h> function families originally defined in TS 18661-4. Add the compoundn functions, which compute (1+X) to the power Y for integer Y (and X at least -1). The integer exponent has type long long int in C23; it was intmax_t in TS 18661-4, and as with other interfaces changed after their initial appearance in the TS, I don't think we need to support the original version of the interface. Note that these functions are "compoundn" with a trailing "n", *not* "compound" (CORE-MATH has the wrong name, for example). As with pown, I strongly encourage searching for worst cases for ulps error for these implementations (necessarily non-exhaustively, given the size of the input space). I also expect a custom implementation for a given format could be much faster as well as more accurate (I haven't tested or benchmarked the CORE-MATH implementation for binary32); this is one of the more complicated and less efficient functions to implement in a type-generic way. As with exp2m1 and exp10m1, this showed up places where the powerpc64le IFUNC setup is not as self-contained as one might hope (in this case, without the changes specific to powerpc64le, there were undefined references to __GI___expf128). Tested for x86_64 and x86, and with build-many-glibcs.py. |
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| .. | ||
| bits | ||
| powerpc32 | ||
| powerpc64 | ||
| sys | ||
| Implies | ||
| Makefile | ||
| Versions | ||
| cancellation-pc-check.h | ||
| configure | ||
| configure.ac | ||
| cpu-features.c | ||
| cpu-features.h | ||
| dl-auxv.h | ||
| dl-cache.h | ||
| dl-hwcap-info.c | ||
| dl-hwcap-info.h | ||
| dl-support.c | ||
| elision-conf.c | ||
| elision-conf.h | ||
| elision-lock.c | ||
| elision-timed.c | ||
| elision-trylock.c | ||
| elision-unlock.c | ||
| get_timebase_freq.c | ||
| gettimeofday.c | ||
| htm.h | ||
| internal-ioctl.h | ||
| ipc_priv.h | ||
| kernel-features.h | ||
| kernel_sigaction.h | ||
| kernel_termios.h | ||
| ldd-rewrite.sed | ||
| libc-start.c | ||
| libc-start.h | ||
| libc-vdso.h | ||
| libpthread-compat.c | ||
| nldbl-abi.h | ||
| pointer_guard.h | ||
| pthread_attr_setstack.c | ||
| pthread_attr_setstacksize.c | ||
| readelflib.c | ||
| rt-sysdep.c | ||
| rtld_static_init.h | ||
| sigcontextinfo.h | ||
| socket-constants-time64.h | ||
| struct_kernel_shmid64_ds.h | ||
| syscall.S | ||
| syscall_cancel.S | ||
| sysconf.c | ||
| sysdep.c | ||
| sysdep.h | ||
| test-gettimebasefreq-static.c | ||
| test-gettimebasefreq.c | ||
| test-powerpc-linux-sysconf.c | ||
| time.c | ||
| tst-hwcap-tunables.c | ||
| xstatver.h | ||