03-04-2008
Strange Results
Thank you. Guess I should have remembered my basic math rules of multiply before divide.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi All
I am doing a locate <file_name> on my Redhat 7 System. I am unable to get the output. All the keep getting is:
locate: this is not a vlaid slocate database: /var/lib/locate/slocate.db
What des this mean? Is my system compromised?
Thanks in advance.
KS (13 Replies)
Discussion started by: skotapal
13 Replies
2. AIX
Multipart question..
Can anybody explain why this happens :
-rw-rw-r-- 1 fnsw fnusr 1531061 Feb 13 21:45 filename1.log
-rw-rw-r-- 1 fnsw fnusr 1760706 Feb 10 22:10 filename2.log
-rw-rw-r-- 1 fnsw fnusr 1525805 Aug 16 2005 filename3.log
-rw-rw-r-- 1... (3 Replies)
Discussion started by: dbridle
3 Replies
3. Solaris
Hi all,
Thanks for any replies and for reading in advance.
We have upgraded one of our database instances to 10g on a Solaris 8 box, anyhow the other day it started trying to ping loads of weird IP addresses that we don't use, since our systems all run on pretty similar IP's. It all behind... (0 Replies)
Discussion started by: B14speedfreak
0 Replies
4. Shell Programming and Scripting
Hi all,
I am writing script that returns the size of each disk or partition when called. I am using FDISK -l and parsing the results to get the result I want. When I execute fdisk -l it shows correct results, BUT when I execute the same thing with results to be put in a variable, I get strange... (5 Replies)
Discussion started by: alirezan
5 Replies
5. Shell Programming and Scripting
Hello ,
When using vim, can ctag and cscope support recording search results and displaying the history results ? Once I jump to one tag, I can use :tnext to jump to next tag, but how can I display the preview search result? (0 Replies)
Discussion started by: 915086731
0 Replies
6. UNIX for Advanced & Expert Users
Disclaimer, I've been a Linux admin for a while but don't frequently setup rsysnc jobs.
Here's the command I'm running on CentOS 5.5, rsync 2.6.8:
rsync -arvz --progress --compress-level=9 /src/ /dest/
/src has 1.5 TB of data, /dest/ is a new destination and started out empy. Oh ya, both... (4 Replies)
Discussion started by: DustinT
4 Replies
7. Shell Programming and Scripting
I want to remove any files that are older than 2 days from a directory. It deletes those files. Then it comes back with a message it is a directory. What am I doing wrong here?
+ find /mydir -mtime +2 -exec rm -f '{}' ';'
rm: /mydir is a directory (2 Replies)
Discussion started by: jtamminen
2 Replies
8. UNIX for Beginners Questions & Answers
Hi Folks -
I have this file that looks like this:
outbox/logs/Client_1042.log
outbox/logs/Client_941.log
outbox/logs/Client_942.log
outbox/logs/Client_943.log
outbox/logs/Client_944.log
And this is my code:
#!/bin/bash
_OUTBOX_BIN="outbox/logs/"
_NAME="Client"
_TEMP="temp.txt"... (9 Replies)
Discussion started by: SIMMS7400
9 Replies
9. Shell Programming and Scripting
Good morning all,
This is the file name in question OD_Orders_2019-02-19.csv
I am trying to create a bash script to read into files with yesterdays date on the file name while retaining the rest of the files name. I would like for $y to equal, the name of the file with a formula output with... (2 Replies)
Discussion started by: Ibrahim A
2 Replies
10. UNIX for Beginners Questions & Answers
Using the 'strings' command and piping the result to 'sort' is producing strange results. I get block of lines that begin with asterisks, then a block that begins with some text, then more lines that begin with asterisks. The actual content is correct - lines beginning with asterisks is the... (5 Replies)
Discussion started by: edstevens
5 Replies
FMA(3) BSD Library Functions Manual FMA(3)
NAME
fma, fmaf, fmal -- fused multiply-add
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <math.h>
double
fma(double x, double y, double z);
float
fmaf(float x, float y, float z);
long double
fmal(long double x, long double y, long double z);
DESCRIPTION
The fma(), fmaf(), and fmal() functions return (x * y) + z, computed with only one rounding error. Using the ordinary multiplication and
addition operators, by contrast, results in two roundings: one for the intermediate product and one for the final result.
For instance, the expression 1.2e100 * 2.0e208 - 1.4e308 produces infinity due to overflow in the intermediate product, whereas fma(1.2e100,
2.0e208, -1.4e308) returns approximately 1.0e308.
The fused multiply-add operation is often used to improve the accuracy of calculations such as dot products. It may also be used to improve
performance on machines that implement it natively. The macros FP_FAST_FMA, FP_FAST_FMAF and FP_FAST_FMAL may be defined in <math.h> to
indicate that fma(), fmaf(), and fmal() (respectively) have comparable or faster speed than a multiply operation followed by an add opera-
tion.
IMPLEMENTATION NOTES
In general, these routines will behave as one would expect if x * y + z were computed with unbounded precision and range, then rounded to the
precision of the return type. However, on some platforms, if z is NaN, these functions may not raise an exception even when the computation
of x * y would have otherwise generated an invalid exception.
SEE ALSO
fenv(3), math(3)
STANDARDS
The fma(), fmaf(), and fmal() functions conform to ISO/IEC 9899:1999 (``ISO C99''). A fused multiply-add operation with virtually identical
characteristics appears in IEEE draft standard 754R.
HISTORY
The fma() and fmaf() routines first appeared in FreeBSD 5.4, and fmal() appeared in FreeBSD 6.0.
BSD
January 22, 2005 BSD