From 79c52daf4740b00bef43e4f5a4281b3480459b38 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Mon, 20 May 2024 13:41:39 +0000 Subject: Implement C23 log2p1 C23 adds various 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. --- sysdeps/powerpc/nofpu/Makefile | 1 + 1 file changed, 1 insertion(+) (limited to 'sysdeps/powerpc/nofpu') diff --git a/sysdeps/powerpc/nofpu/Makefile b/sysdeps/powerpc/nofpu/Makefile index fa462339ba..96657c9676 100644 --- a/sysdeps/powerpc/nofpu/Makefile +++ b/sysdeps/powerpc/nofpu/Makefile @@ -54,4 +54,5 @@ CFLAGS-s_fmaximum_magl.c += -fno-builtin-fabsl CFLAGS-s_fmaximum_mag_numl.c += -fno-builtin-fabsl CFLAGS-s_fminimum_magl.c += -fno-builtin-fabsl CFLAGS-s_fminimum_mag_numl.c += -fno-builtin-fabsl +CFLAGS-s_log2p1l.c += -fno-builtin-fabsl endif -- cgit 1.4.1