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.Dd July 8, 2018
.Dt Q_QABS 3
.Os
.Sh NAME
.Nm Q_QABS ,
.Nm Q_Q2S ,
.Nm Q_Q2F
.Nd fixed-point math functions which operate on a single Q number
.Sh SYNOPSIS
.In sys/qmath.h
.Ft QTYPE
.Fn Q_QABS "QTYPE q"
.Ft double
.Fn Q_Q2D "QTYPE q"
.Ft float
.Fn Q_Q2F "QTYPE q"
.Sh DESCRIPTION
The
.Fn Q_QABS
function returns an absolute value representation of
.Fa q .
.Pp
The
.Fn Q_Q2D
and
.Fn Q_Q2F
functions return the double and float representations of
.Fa q
respectively.
.Pp
All of those functions operate on
the following data types:
.Vt s8q_t ,
.Vt u8q_t ,
.Vt s16q_t ,
.Vt u16q_t ,
.Vt s32q_t ,
.Vt u32q_t ,
.Vt s64q_t ,
and
.Vt u64q_t ,
which are referred to generically as
.Fa QTYPE .
.Pp
For more details, see
.Xr qmath 3 .
.Sh RETURN VALUES
.Fn Q_QABS
function returns a QTYPE that is identical to that of
.Fa q .
.Pp
The
.Fn Q_Q2D
and
.Fn Q_Q2F
functions return the double and float representations of
.Fa q
respectively.
.Sh SEE ALSO
.Xr errno 2 ,
.Xr qmath 3 ,
.Xr stdint 7
.Sh HISTORY
The
.Xr qmath 3
functions first appeared in
.Fx 13.0 .
.Sh AUTHORS
.An -nosplit
The
.Xr qmath 3
functions and this manual page were written by
.An Lawrence Stewart Aq Mt lstewart@FreeBSD.org
and sponsored by Netflix, Inc.