1 files changed, 87 insertions, 0 deletions
diff --git a/static/freebsd/man3/stdc_trailing_zeros.3 b/static/freebsd/man3/stdc_trailing_zeros.3
new file mode 100644
index 00000000..4bc67559
--- /dev/null
+++ b/static/freebsd/man3/stdc_trailing_zeros.3
@@ -0,0 +1,87 @@
+.\"
+.\" Copyright (c) 2025 Robert Clausecker <fuz@FreeBSD.org>
+.\"
+.\" SPDX-License-Identifier: BSD-2-Clause
+.\"
+.Dd November 9, 2025
+.Dt STDC_TRAILING_ZEROS 3
+.Os
+.Sh NAME
+.Nm stdc_trailing_zeros
+.Nd find the number of trailing zeros in an integer
+.Sh SYNOPSIS
+.Lb libc
+.In stdbit.h
+.Ft unsigned int
+.Fn stdc_trailing_zeros_uc "unsigned char value"
+.Ft unsigned int
+.Fn stdc_trailing_zeros_us "unsigned short value"
+.Ft unsigned int
+.Fn stdc_trailing_zeros_ui "unsigned int value"
+.Ft unsigned int
+.Fn stdc_trailing_zeros_ul "unsigned long value"
+.Ft unsigned int
+.Fn stdc_trailing_zeros_ull "unsigned long long value"
+.Ft unsigned int
+.Fn stdc_trailing_zeros "value"
+.Sh DESCRIPTION
+The
+.Nm stdc_trailing_zeros_ Ns Em type Ns ()
+family of functions returns the number of trailing zeros in
+.Fa value ,
+where 
+.Fa value
+is of type
+.Va unsigned char ,
+.Va unsigned short ,
+.Va unsigned int ,
+.Va unsigned long ,
+or
+.Va unsigned long long
+for
+.Em type
+being
+.Sy uc ,
+.Sy us ,
+.Sy ui ,
+.Sy ul ,
+or
+.Sy ull
+respectively.
+The
+.Fn stdc_trailing_zeros "value"
+type-generic macro picks the appropriate
+.Nm stdc_trailing_zeros_ Ns Em type Ns ()
+function based on the type of
+.Fa value .
+.Sh RETURN VALUES
+Returns the number of trailing zeros in
+.Fa value .
+If
+.Fa value
+is all zeros,
+the total number of bits in the type of
+.Fa value
+is returned.
+.Sh SEE ALSO
+.Xr ffs 3 ,
+.Xr stdbit 3 ,
+.Xr stdc_leading_zeros 3 ,
+.Xr stdc_trailing_ones 3 ,
+.Xr stdc_first_trailing_one 3
+.Sh STANDARDS
+The
+.Nm stdc_trailing_zeros_ Ns Em type Ns ()
+family of functions and the
+.Fn stdc_trailing_zeros
+type-generic macro conform to
+.St -isoC-2023 .
+.Sh HISTORY
+The
+.Nm stdc_trailing_zeros_ Ns Em type Ns ()
+family of functions and the
+.Fn stdc_trailing_zeros
+type-generic macro were added in
+.Fx 15.1.
+.Sh AUTHOR
+.An Robert Clausecker Aq Mt fuz@FreeBSD.org