Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

fperr(2) [bsd man page]

FPERR(2)							System Calls Manual							  FPERR(2)

fperr - get floating-point error registers (2BSD) SYNOPSIS
#include <pdp/fperr.h> struct fperr { short f_fec; caddr_t f_fea; }; fperr(fpe) struct fperr *fpe; DESCRIPTION
Fperr returns the contents of the floating-point processor's error registers as they were following the last floating exception generated by the calling process. The registers are stored in the structure pointed to by fpe. This call is required because the error registers in the PDP-11 floating-point processor are read-only. Thus, they may be changed by some other process between the time that the current process generates an exception and the time that it reads the registers. Therefore, the system saves their state at the time of an exception. The values returned are valid only after a floating-point exception. ERRORS
[EINVAL] The kernel has not been compiled for a processor with floating point. SEE ALSO
Ed Gould, Jim Reeds, Vance Vaughan, UNIX Problems with Floating Point Processors BUGS
Fperr is unique to the PDP-11 and 2BSD; its use is discouraged. 3rd Berkeley Distribution January 22, 1987 FPERR(2)

Check Out this Related Man Page

fegetexceptflag(3M)													       fegetexceptflag(3M)

fegetexceptflag() - get floating-point exception flags SYNOPSIS
HP Integrity Server Only PA-RISC Only DESCRIPTION
The function stores a representation of the states of the floating-point exception flags indicated by the argument excepts in the object pointed to by the argument flagp. The excepts argument can be constructed as a bitwise OR of the floating-point exception macros: and rep- resents all the floating-point exceptions. The object into which the floating-point exception flags are stored can be passed to to restore the system exception flags, but the representation of the floating-point exception flags stored in the object is otherwise unspecified. Use instead of to determine which floating-point exception flags are set. USAGE
To use this function, compile either with the default option or with the and options. Make sure your program includes For Integrity servers, specify on the compiler command line or place the call to this function under the effect of an affirmative pragma: If the pragma is placed outside of any top-level declarations in a file, the pragma will apply to all declarations in the compilation fol- lowing the pragma until another pragma is encountered or until the end of the file is reached. If the pragma is placed at the beginning of a block (compound statement), the pragma will apply until another pragma is encountered or until the end of the block is reached. For PA-RISC, you might need to use the compiler option in order to prevent optimizations that can undermine the specified behavior of this function. Link in the math library by specifying on the compiler or linker command line. For more information, see the at the following site: RETURN VALUE
Integrity Server Only This function always returns 0, indicating that a representation was successfully stored. PA-RISC Only None. ERRORS
No errors are defined. EXAMPLES
Store the overflow and invalid floating-point exception flags: SEE ALSO
feclearexcept(3M), fegettrapenable(3M), feraiseexcept(3M), fesetexceptflag(3M), fesettrapenable(3M), fetestexcept(3M), fenv(5). STANDARDS CONFORMANCE
: ISO/IEC C99 (including Annex F, "IEC 60559 floating-point arithmetic") fegetexceptflag(3M)
Man Page

10 More Discussions You Might Find Interesting

1. OS X (Apple)

Mac OS X: Based on UNIX - Solid As a Rock

See this threads: Page Not Found - Apple Open Source - Apple (0 Replies)
Discussion started by: Neo
0 Replies

2. UNIX for Beginners Questions & Answers

Simple rules of the UNIX.COM forums:

RULES OF THE UNIX AND LINUX FORUMS For the latest version of the community rules (the official community rules page), please visit here. No flames, shouting (all caps), sarcasm, bullying, profanity or arrogant posts. No negative comments about others or impolite remarks. Be patient. No... (1 Reply)
Discussion started by: Neo
1 Replies

3. Shell Programming and Scripting

Scripts without shebang

I see lot of ad-hoc shell scripts in our servers which don't have a shebang at the beginning . Does this mean that it will run on any shell ? Is it a good practice to create scripts (even ad-hoc ones) without shebang ? (16 Replies)
Discussion started by: kraljic
16 Replies

4. Fedora

Is UNIX an open source OS ?

Hi everyone, I know the following questions are noobish questions but I am asking them because I am confused about the basics of history behind UNIX and LINUX. Ok onto business, my questions are-: Was/Is UNIX ever an open source operating system ? If UNIX was... (21 Replies)
Discussion started by: sreyan32
21 Replies

5. UNIX for Beginners Questions & Answers

Memory leak with awk on MacOs

Dear all, I use awk quite a bit for data wrangling ... today I find weird behavior that I cannot wrap my head around. if I execute the following command (simplified to illustrate the behavior ... nothing to do with the real command) bash-3.2$ awk... (3 Replies)
Discussion started by: comm|getline
3 Replies

6. Shell Programming and Scripting

Mail/mailx ignores newline formatting Problem.

I have a file hello.txt which i wish to send as a email body (not attachment). cat -ev hello.txt 1$ 2$ 3$ I use the following command to send the hello.txt as the email body. mailx -s "Alert"<hello.txt However, the email received has this in the email body 123... (2 Replies)
Discussion started by: mohtashims
2 Replies

7. Linux

LM 19.1 from pendrive

I've "installed" LM 19.1 to a PNY 16Gb(2.0) pendrive. I have a few issues that I'd like to resolve. First and foremost, the O.S. experiences "lagging" issues and to a lesser degree, freezing. Example: Complete "boot-up" (from start to complete "home" page) can take upwards of 7 mins. Then when... (10 Replies)
Discussion started by: 69Rixter
10 Replies

8. UNIX for Beginners Questions & Answers

UNIX Environment Setup - (Just starting!)

Morning All So, I am starting looking into the world of UNIX for a new job (luckily not my primary function!) and I am looking to get stared. Like anything I seem to learn best by trying things out first in an environment but I have a key question: Currently I use Oracle VirtualBox, can... (8 Replies)
Discussion started by: GophusMeau
8 Replies

9. Solaris

Is it safe to install x86 Solaris 10 U6 after installed-Linux-and-FreeBSD?

I've installed Slack 14.2 on /dev/sda1 (/dev/sda2 is swap) and FreeBSD 12 on /dev/sda3 and lilo is the boot manager. FreeBSD slices are as follows; / on /dev/ada0S3a, swap on /dev/ada0s3e, /var on /dev/ada0s3b, /tmp on /dev/ada0s3d and /usr on /dev/ada0s3f. I hesitate to install Solaris 10... (2 Replies)
Discussion started by: vectrum
2 Replies

10. UNIX for Advanced & Expert Users

[Tip] How to display the number of logged-in users

In a professional environment with traditional application you often want (or are asked) to report the users. Traditionally there is the who command who | awk '{print $1}'telnetd or sshd register the users in the utmp file, to be shown with who, w, users, finger, pinky, ... In addition they... (1 Reply)
Discussion started by: MadeInGermany
1 Replies

Featured Tech Videos