Document the fpgetprec/fpsetprec functions in their man page.
Add cross-references to the elusive fpsetmask() function to various other man pages. Reviewed by: bde
This commit is contained in:
Jonathan Lemon
parent
4c890f3b43
commit
4f36d4ac99
|
|
@ -218,6 +218,7 @@ or
|
|||
.Xr sigaltstack 2 ,
|
||||
.Xr sigprocmask 2 ,
|
||||
.Xr sigsuspend 2 ,
|
||||
.Xr fpsetmask 3 ,
|
||||
.Xr setjmp 3 ,
|
||||
.Xr tty 4
|
||||
.Sh HISTORY
|
||||
|
|
|
|||
|
|
@ -30,7 +30,7 @@
|
|||
.\" SUCH DAMAGE.
|
||||
.\"
|
||||
.\" From: @(#)sigaction.2 8.2 (Berkeley) 4/3/94
|
||||
.\" $Id: sigaction.2,v 1.14 1997/09/13 19:43:24 joerg Exp $
|
||||
.\" $Id: sigaction.2,v 1.15 1998/01/02 19:22:48 alex Exp $
|
||||
.\"
|
||||
.Dd April 3, 1994
|
||||
.Dt SIGACTION 2
|
||||
|
|
@ -404,6 +404,7 @@ flags are featuring options commonly found in other operating systems.
|
|||
.Xr sigsuspend 2 ,
|
||||
.Xr sigvec 2 ,
|
||||
.Xr wait 2 ,
|
||||
.Xr fpsetmask 3 ,
|
||||
.Xr setjmp 3 ,
|
||||
.Xr siginterrupt 3 ,
|
||||
.Xr sigsetops 3 ,
|
||||
|
|
|
|||
|
|
@ -111,6 +111,7 @@ has a value other than those listed here.
|
|||
.Xr kill 2 ,
|
||||
.Xr sigaction 2 ,
|
||||
.Xr sigsuspend 2 ,
|
||||
.Xr fpsetmask 3 ,
|
||||
.Xr sigsetops 3
|
||||
.Sh STANDARDS
|
||||
The
|
||||
|
|
|
|||
|
|
@ -30,7 +30,7 @@
|
|||
.\" SUCH DAMAGE.
|
||||
.\"
|
||||
.\" from: @(#)math.3 6.10 (Berkeley) 5/6/91
|
||||
.\" $Id: math.3,v 1.5 1997/02/22 15:09:39 peter Exp $
|
||||
.\" $Id: math.3,v 1.6 1998/01/15 23:28:18 danny Exp $
|
||||
.\"
|
||||
.TH MATH 3M "May 6, 1991"
|
||||
.UC 4
|
||||
|
|
@ -623,6 +623,15 @@ IEEE 754 defaults for granted; this means that a decision to
|
|||
trap all divisions by zero could disrupt a code that would
|
||||
otherwise get correct results despite division by zero.
|
||||
.SH SEE ALSO
|
||||
\fBfpgetround\fR(3),
|
||||
\fBfpsetround\fR(3),
|
||||
\fBfpgetprec\fR(3),
|
||||
\fBfpsetprec\fR(3),
|
||||
\fBfpgetmask\fR(3),
|
||||
\fBfpsetmask\fR(3),
|
||||
\fBfpgetsticky\fR(3),
|
||||
\fBfpresetsticky\fR(3) - IEEE floating point interface
|
||||
.SH NOTES
|
||||
An explanation of IEEE 754 and its proposed extension p854
|
||||
was published in the IEEE magazine MICRO in August 1984 under
|
||||
the title "A Proposed Radix\- and Word\-length\-independent
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
# @(#)Makefile 8.2 (Berkeley) 12/13/93
|
||||
# $Id$
|
||||
# $Id: Makefile,v 1.12 1997/02/22 13:24:13 peter Exp $
|
||||
|
||||
MAN3= assert.3 bitstring.3 end.3 fpgetround.3 intro.3 pthread.3 queue.3 \
|
||||
stdarg.3 sysexits.3
|
||||
|
|
@ -11,6 +11,7 @@ MLINKS+=end.3 edata.3 end.3 etext.3
|
|||
MLINKS+=fpgetround.3 fpsetround.3 fpgetround.3 fpgetmask.3
|
||||
MLINKS+=fpgetround.3 fpsetmask.3 fpgetround.3 fpgetsticky.3
|
||||
MLINKS+=fpgetround.3 fpsetsticky.3 fpgetround.3 fpresetsticky.3
|
||||
MLINKS+=fpgetround.3 fpsetprec.3 fpgetround.3 fpgetprec.3
|
||||
MLINKS+=queue.3 SLIST_ENTRY.3 queue.3 SLIST_HEAD.3 queue.3 SLIST_INIT.3
|
||||
MLINKS+=queue.3 SLIST_INSERT_AFTER.3 queue.3 SLIST_INSERT_HEAD.3
|
||||
MLINKS+=queue.3 SLIST_REMOVE_HEAD.3 queue.3 SLIST_REMOVE.3
|
||||
|
|
|
|||
|
|
@ -30,7 +30,7 @@
|
|||
.\" SUCH DAMAGE.
|
||||
.\"
|
||||
.\" @(#)fpgetround.3 1.0 (Berkeley) 9/23/93
|
||||
.\" $Id: fpgetround.3,v 1.4 1997/03/19 20:42:18 bde Exp $
|
||||
.\" $Id: fpgetround.3,v 1.5 1997/04/13 14:19:59 bde Exp $
|
||||
.\"
|
||||
.Dd August 23, 1993
|
||||
.Dt FPGETROUND 3
|
||||
|
|
@ -38,6 +38,8 @@
|
|||
.Sh NAME
|
||||
.Nm fpgetround ,
|
||||
.Nm fpsetround ,
|
||||
.Nm fpsetprec ,
|
||||
.Nm fpgetprec ,
|
||||
.Nm fpgetmask ,
|
||||
.Nm fpsetmask ,
|
||||
.Nm fpgetsticky ,
|
||||
|
|
@ -47,16 +49,16 @@
|
|||
.Fd #include <floatingpoint.h>
|
||||
.Ft typedef enum {
|
||||
.br
|
||||
.Fa FP_RN,
|
||||
.Fa FP_RN,
|
||||
.Li /* round to nearest */
|
||||
.br
|
||||
.Fa FP_RM,
|
||||
.Fa FP_RM,
|
||||
.Li /* round to minus infinity */
|
||||
.br
|
||||
.Fa FP_RP,
|
||||
.Fa FP_RP,
|
||||
.Li /* round to plus infinity */
|
||||
.br
|
||||
.Fa FP_RZ,
|
||||
.Fa FP_RZ,
|
||||
.Li /* truncate */
|
||||
.br
|
||||
.Ft } fp_rnd_t;
|
||||
|
|
@ -65,6 +67,29 @@
|
|||
.Fn fpgetround void
|
||||
.Ft fp_rnd_t
|
||||
.Fn fpsetround "fp_rnd_t direction"
|
||||
.Pp
|
||||
.nr fZ 0
|
||||
.Ft typedef enum {
|
||||
.br
|
||||
.Fa FP_PS,
|
||||
.Li /* 24 bit (single-precision) */
|
||||
.br
|
||||
.Fa FP_PRS,
|
||||
.Li /* reserved */
|
||||
.br
|
||||
.Fa FP_PD,
|
||||
.Li /* 53 bit (double-precision) */
|
||||
.br
|
||||
.Fa FP_PE,
|
||||
.Li /* 64 bit (extended-precision) */
|
||||
.br
|
||||
.Ft } fp_prec_t;
|
||||
.Pp
|
||||
.Ft fp_prec_t
|
||||
.Fn fpgetprec void
|
||||
.Ft fp_prec_t
|
||||
.Fn fpsetprec "fp_prec_t precision"
|
||||
.Pp
|
||||
.Fd #define fp_except_t int
|
||||
.Fd #define FP_X_INV 0x01 /* invalid */
|
||||
.Fd #define FP_X_OFL 0x08 /* overflow */
|
||||
|
|
@ -85,7 +110,8 @@ When a floating point exception is detected, the exception sticky flag is
|
|||
set and the exception mask is tested. If the mask is set, then a trap
|
||||
occurs. These routines allow both setting the floating point exception
|
||||
masks, and resetting the exception sticky flags after an exception is
|
||||
detected. In addition, they allow setting the floating point rounding mode.
|
||||
detected. In addition, they allow setting the floating point rounding mode
|
||||
and precision.
|
||||
.Pp
|
||||
The
|
||||
.Fn fpgetround
|
||||
|
|
@ -99,6 +125,17 @@ sets the floating point rounding mode and returns
|
|||
the previous mode.
|
||||
.Pp
|
||||
The
|
||||
.Fn fpgetprec
|
||||
function
|
||||
returns the current floating point precision.
|
||||
.Pp
|
||||
The
|
||||
.Fn fpsetprec
|
||||
function
|
||||
sets the floating point precision and returns
|
||||
the previous precision.
|
||||
.Pp
|
||||
The
|
||||
.Fn fpgetmask
|
||||
function
|
||||
returns the current floating point exception masks.
|
||||
|
|
|
|||
Loading…
Reference in New Issue