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. |
||
|---|---|---|
| .. | ||
| fpu | ||
| mips16 | ||
| nofpu | ||
| Makefile | ||
| Versions | ||
| arch-syscall.h | ||
| bug-getcontext-mips-gp.c | ||
| c++-types.data | ||
| ld.abilist | ||
| libBrokenLocale.abilist | ||
| libanl.abilist | ||
| libdl.abilist | ||
| libm.abilist | ||
| libnsl.abilist | ||
| libpthread.abilist | ||
| libresolv.abilist | ||
| librt.abilist | ||
| libthread_db.abilist | ||
| libutil.abilist | ||
| mips-syscall5.S | ||
| mips-syscall6.S | ||
| mips-syscall7.S | ||
| syscall_cancel.S | ||
| sysdep.h | ||
| time64-compat.h | ||