diff options
Diffstat (limited to 'man3/fabs.3')
| -rw-r--r-- | man3/fabs.3 | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/man3/fabs.3 b/man3/fabs.3 new file mode 100644 index 000000000..17ef66745 --- /dev/null +++ b/man3/fabs.3 @@ -0,0 +1,60 @@ +.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) +.\" +.\" Permission is granted to make and distribute verbatim copies of this +.\" manual provided the copyright notice and this permission notice are +.\" preserved on all copies. +.\" +.\" Permission is granted to copy and distribute modified versions of this +.\" manual under the conditions for verbatim copying, provided that the +.\" entire resulting derived work is distributed under the terms of a +.\" permission notice identical to this one. +.\" +.\" Since the Linux kernel and libraries are constantly changing, this +.\" manual page may be incorrect or out-of-date. The author(s) assume no +.\" responsibility for errors or omissions, or for damages resulting from +.\" the use of the information contained herein. The author(s) may not +.\" have taken the same level of care in the production of this manual, +.\" which is licensed free of charge, as they might when working +.\" professionally. +.\" +.\" Formatted or processed versions of this manual, if unaccompanied by +.\" the source, must acknowledge the copyright and authors of this work. +.\" +.\" References consulted: +.\" Linux libc source code +.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) +.\" 386BSD man pages +.\" Modified Sat Jul 24 19:42:04 1993 by Rik Faith (faith@cs.unc.edu) +.\" Added fabsl, fabsf, aeb, 2001-06-07 +.\" +.TH FABS 3 2001-06-07 "" "Linux Programmer's Manual" +.SH NAME +fabs, fabsf, fabsl \- absolute value of floating-point number +.SH SYNOPSIS +.nf +.B #include <math.h> +.sp +.BI "double fabs(double " x ); +.br +.BI "float fabsf(float " x ); +.br +.BI "long double fabsl(long double " x ); +.fi +.sp +Link with \-lm. +.SH DESCRIPTION +The \fBfabs\fP functions return the absolute value of the floating-point +number \fIx\fP. +.SH ERRORS +No errors can occur. +.SH "CONFORMING TO" +The +.B fabs() +function conforms to SVID 3, POSIX, BSD 4.3, ISO 9899. +The other functions are from C99. +.SH "SEE ALSO" +.BR abs (3), +.BR ceil (3), +.BR floor (3), +.BR labs (3), +.BR rint (3) |