diff options
Diffstat (limited to 'man/man3/log10.3')
-rw-r--r-- | man/man3/log10.3 | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/man/man3/log10.3 b/man/man3/log10.3 new file mode 100644 index 0000000..33bdaf0 --- /dev/null +++ b/man/man3/log10.3 @@ -0,0 +1,94 @@ +'\" t +.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) +.\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk +.\" <mtk.manpages@gmail.com> +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.\" References consulted: +.\" Linux libc source code +.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) +.\" 386BSD man pages +.\" Modified 1993-07-24 by Rik Faith (faith@cs.unc.edu) +.\" Modified 1995-08-14 by Arnt Gulbrandsen <agulbra@troll.no> +.\" Modified 2002-07-27 by Walter Harms +.\" (walter.harms@informatik.uni-oldenburg.de) +.\" +.TH log10 3 2024-05-02 "Linux man-pages (unreleased)" +.SH NAME +log10, log10f, log10l \- base-10 logarithmic function +.SH LIBRARY +Math library +.RI ( libm ", " \-lm ) +.SH SYNOPSIS +.nf +.B #include <math.h> +.P +.BI "double log10(double " x ); +.BI "float log10f(float " x ); +.BI "long double log10l(long double " x ); +.fi +.P +.RS -4 +Feature Test Macro Requirements for glibc (see +.BR feature_test_macros (7)): +.RE +.P +.BR log10f (), +.BR log10l (): +.nf + _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L + || /* Since glibc 2.19: */ _DEFAULT_SOURCE + || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE +.fi +.SH DESCRIPTION +These functions return the base-10 logarithm of +.IR x . +.SH RETURN VALUE +On success, these functions return the base-10 logarithm of +.IR x . +.P +For special cases, including where +.I x +is 0, 1, negative, infinity, or NaN, see +.BR log (3). +.SH ERRORS +See +.BR math_error (7) +for information on how to determine whether an error has occurred +when calling these functions. +.P +For a discussion of the errors that can occur for these functions, see +.BR log (3). +.SH ATTRIBUTES +For an explanation of the terms used in this section, see +.BR attributes (7). +.TS +allbox; +lbx lb lb +l l l. +Interface Attribute Value +T{ +.na +.nh +.BR log10 (), +.BR log10f (), +.BR log10l () +T} Thread safety MT-Safe +.TE +.SH STANDARDS +C11, POSIX.1-2008. +.SH HISTORY +C99, POSIX.1-2001. +.P +The variant returning +.I double +also conforms to +SVr4, 4.3BSD, C89. +.SH SEE ALSO +.BR cbrt (3), +.BR clog10 (3), +.BR exp10 (3), +.BR log (3), +.BR log2 (3), +.BR sqrt (3) |