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authorJoseph Myers <josmyers@redhat.com>2024-12-04 20:04:04 +0000
committerJoseph Myers <josmyers@redhat.com>2024-12-04 20:04:04 +0000
commit776938e8b8dcf2b59998979e91cc0f9db7d771a8 (patch)
tree65d6e7bf7f140a54d4d0b0848b1ba247691d662b /manual
parent0ae0af68d8fa3bf6cbe1e4f1de5929ff71de67b3 (diff)
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Implement C23 sinpi
C23 adds various <math.h> function families originally defined in TS 18661-4. Add the sinpi functions (sin(pi*x)). Tested for x86_64 and x86, and with build-many-glibcs.py.
Diffstat (limited to 'manual')
-rw-r--r--manual/math.texi13
1 files changed, 13 insertions, 0 deletions
diff --git a/manual/math.texi b/manual/math.texi
index b818db2..7f03031 100644
--- a/manual/math.texi
+++ b/manual/math.texi
@@ -240,6 +240,19 @@ All these functions, including the @code{_Float@var{N}} and
should be prepared to cope with their absence.
@end deftypefun
+@deftypefun double sinpi (double @var{x})
+@deftypefunx float sinpif (float @var{x})
+@deftypefunx {long double} sinpil (long double @var{x})
+@deftypefunx _FloatN sinpifN (_Float@var{N} @var{x})
+@deftypefunx _FloatNx sinpifNx (_Float@var{N}x @var{x})
+@standards{TS 18661-4:2015, math.h}
+@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
+These functions return the sine of pi multiplied by @var{x}. The
+return value is in the range @code{-1} to @code{1}.
+
+The @code{sinpi} functions are from TS 18661-4:2015.
+@end deftypefun
+
@deftypefun double cospi (double @var{x})
@deftypefunx float cospif (float @var{x})
@deftypefunx {long double} cospil (long double @var{x})