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| author | Joseph Myers <josmyers@redhat.com> | 2024-06-17 13:48:13 +0000 |
|---|---|---|
| committer | Joseph Myers <josmyers@redhat.com> | 2024-06-17 13:48:13 +0000 |
| commit | 55eb99e9a9d840ba452b128be14d6529c2dde039 (patch) | |
| tree | 6810f148fb04ca7217c67aa3f2e10b72d86a8d2d /math/tgmath.h | |
| parent | bb014f50c4a0c8d8db1ba5af55c104e430b5533d (diff) | |
| download | glibc-55eb99e9a9d840ba452b128be14d6529c2dde039.tar.xz glibc-55eb99e9a9d840ba452b128be14d6529c2dde039.zip | |
Implement C23 log10p1
C23 adds various <math.h> function families originally defined in TS
18661-4. Add the log10p1 functions (log10(1+x): like log1p, but for
base-10 logarithms).
This is directly analogous to the log2p1 implementation (except that
whereas log2p1 has a smaller underflow range than log1p, log10p1 has a
larger underflow range). The test inputs are copied from those for
log1p and log2p1, plus a few more inputs in that wider underflow
range.
Tested for x86_64 and x86, and with build-many-glibcs.py.
Diffstat (limited to 'math/tgmath.h')
| -rw-r--r-- | math/tgmath.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/math/tgmath.h b/math/tgmath.h index 78fd2f5ae8..9667cb1ff9 100644 --- a/math/tgmath.h +++ b/math/tgmath.h @@ -878,6 +878,9 @@ /* Return log2(1 + X). */ #define log2p1(Val) __TGMATH_UNARY_REAL_ONLY (Val, log2p1) +/* Return log10(1 + X). */ +#define log10p1(Val) __TGMATH_UNARY_REAL_ONLY (Val, log10p1) + /* Return log(1 + X). */ #define logp1(Val) __TGMATH_UNARY_REAL_ONLY (Val, logp1) #endif |