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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/Makefile | |
| 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/Makefile')
| -rw-r--r-- | math/Makefile | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/math/Makefile b/math/Makefile index 435939aedb..36024a5039 100644 --- a/math/Makefile +++ b/math/Makefile @@ -127,6 +127,7 @@ gen-libm-calls = \ s_fminimum_numF \ s_fminmagF \ s_iseqsigF \ + s_log2p1F \ s_nanF \ s_nextdownF \ s_significandF \ @@ -650,6 +651,7 @@ libm-test-funcs-auto = \ log10 \ log1p \ log2 \ + log2p1 \ pow \ sin \ sincos \ @@ -892,6 +894,7 @@ tgmath3-macros = \ log10 \ log1p \ log2 \ + log2p1 \ logb \ lrint \ lround \ @@ -1264,6 +1267,7 @@ CFLAGS-e_log.c += -fno-builtin-logl CFLAGS-w_log10.c += -fno-builtin-log10l CFLAGS-w_log1p.c += -fno-builtin-log1pl CFLAGS-e_log2.c += -fno-builtin-log2l +CFLAGS-s_log2p1.c += -fno-builtin-log2p1l CFLAGS-s_logb.c += -fno-builtin-logbl CFLAGS-s_lrint.c += -fno-builtin-lrintl CFLAGS-s_lround.c += -fno-builtin-lroundl @@ -1389,6 +1393,7 @@ CFLAGS-e_log.c += -fno-builtin-logf32x -fno-builtin-logf64 CFLAGS-w_log10.c += -fno-builtin-log10f32x -fno-builtin-log10f64 CFLAGS-w_log1p.c += -fno-builtin-log1pf32x -fno-builtin-log1pf64 CFLAGS-e_log2.c += -fno-builtin-log2f32x -fno-builtin-log2f64 +CFLAGS-s_log2p1.c += -fno-builtin-log2p1f32x -fno-builtin-log2p1f64 CFLAGS-s_logb.c += -fno-builtin-logbf32x -fno-builtin-logbf64 CFLAGS-s_lrint.c += -fno-builtin-lrintf32x -fno-builtin-lrintf64 CFLAGS-s_lround.c += -fno-builtin-lroundf32x -fno-builtin-lroundf64 @@ -1503,6 +1508,7 @@ CFLAGS-e_logf.c += -fno-builtin-logf32 CFLAGS-w_log10f.c += -fno-builtin-log10f32 CFLAGS-w_log1pf.c += -fno-builtin-log1pf32 CFLAGS-e_log2f.c += -fno-builtin-log2f32 +CFLAGS-s_log2p1f.c += -fno-builtin-log2p1f32 CFLAGS-s_logbf.c += -fno-builtin-logbf32 CFLAGS-s_lrintf.c += -fno-builtin-lrintf32 CFLAGS-s_lroundf.c += -fno-builtin-lroundf32 |