Strange value of the double type variable: -nan(0x8000000000000)
I am confused by the value of "currdisk->currangle" after adding operation. Initially the value of "currdisk->currangle" is 0.77500000000000013, but after adding operation, it's changed to "-nan(0x8000000000000)", Can anyone explain ? Thanks! The following is the occasion of gdb debugging.
Then I change currdisk->currangle += (simtime - seg->time) / currdisk->rotatetime ;
to double tmp1 = (simtime - seg->time) / currdisk->rotatetime;
currdisk->currangle += tmp1;
The value of currdisk->currangle is normal. Can anyone explain the confusing phenomenon ?
---------- Post updated 05-30-14 at 02:25 AM ---------- Previous update was 05-29-14 at 10:56 PM ----------
Dear All,
I am trying to write an script to calculate geometric centre of selected residues of a protein structure. Say I have a PDB file (a text containing the x, y, and z coordinates of atoms of a protein). I want to extract the X coordinates of the atoms belonging to the interested residues... (2 Replies)
hello all how can i get the type of variable in perl like
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Hello experts,
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So, I'm making a little awk script that generates a range-based histogram of a set of numbers. I've stumbled onto a strange thing. Toward the end of the process, I have this test:
if ( bindex < s )
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I have a question about the type of this variable
checkU= sudo cat /etc/passwd: grep $uname: wc -l
I write a script to check the existent of username that get from the keyboard. If there is no username,it will create the username else it show the 'Duplicate name" message.
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Hi,
I want to start MY_PROGRAM in a bash script with additional parameters given in the CONFIGURATION_ARRAY.
IFS="'"
CONFIGURATION_ARRAY=( '-N 0 -m 0' '-N 0 -m 1' )
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Trying to find out whether there is a limit for the number of records that can be stored in a variable I set up this small script:
#!/usr/bin/ksh
for ((i = 1; i < 21; i++))
do
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I'm converting a binary file to ASCII using c code.
The folllowing block of code prints correct double value 00000.000000000 on HPUNIX platform.
longi double;
/* C79 - Price Per Minute */
memcpy(&longi,&rbuff,8);
fprintf(wfp,"%015.9f ",longi);
prints : 00000.000000000
... (6 Replies)
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I am trying to concatenate a string in a bash script like this:
runCmd="docker run -e \"IMAGE_NAME=$IMAGE_NAME\" "
env | grep "$ENV_SUFFIX" | while read line; do
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Discussion started by: czabak
3 Replies
LEARN ABOUT LINUX
gzexe
GZEXE(1) General Commands Manual GZEXE(1)NAME
gzexe - compress executable files in place
SYNOPSIS
gzexe name ...
DESCRIPTION
The gzexe utility allows you to compress executables in place and have them automatically uncompress and execute when you run them (at a
penalty in performance). For example if you execute ``gzexe /usr/bin/gdb'' it will create the following two files:
-rwxr-xr-x 1 root root 1026675 Jun 7 13:53 /usr/bin/gdb
-rwxr-xr-x 1 root root 2304524 May 30 13:02 /usr/bin/gdb~
/usr/bin/gdb~ is the original file and /usr/bin/gdb is the self-uncompressing executable file. You can remove /usr/bin/gdb~ once you are
sure that /usr/bin/gdb works properly.
This utility is most useful on systems with very small disks.
OPTIONS -d Decompress the given executables instead of compressing them.
SEE ALSO gzip(1), znew(1), zmore(1), zcmp(1), zforce(1)CAVEATS
The compressed executable is a shell script. This may create some security holes. In particular, the compressed executable relies on the
PATH environment variable to find gzip and some standard utilities (basename, chmod, ln, mkdir, mktemp, rm, sleep, and tail).
BUGS
gzexe attempts to retain the original file attributes on the compressed executable, but you may have to fix them manually in some cases,
using chmod or chown.
GZEXE(1)