The only thing I have to suggest will be a lot of work. Write a tiny workable fragment of code that will set up your initial values. Then execute:
And then have a printf to display the result. This will probably work reliably.
Now, bit by bit, add a few lines from your original program to the fragment. After each addition, retest. Eventually you will add a few lines that break the program. That will be enough of a clue to find your bug. (The only other possible outcome is that you will have a complete second copy of original program that somehow works correctly. Use diff to find out why.)
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
typeof(var); in javascript for instance ? to know if the variable is int or string ? (2 Replies)
Hello experts,
How we can find out,that what is type of a scalar variable? i.e a scalar var contain a number or a string.
Thanks in advance. (8 Replies)
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 )
"bindex" is the "index" of my "bin" (the array element that gets incremented whenever a... (2 Replies)
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.
The problem is it... (4 Replies)
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' )
for configuration in ${CONFIGURATION_ARRAY}
do
//DEBUG
N=${configuration%-*} //-N 0
M=-${configuration##*-} //-m 0... (5 Replies)
Trying to find out whether there is a limit for the number of records that can be stored in a variable I set up this small script:
#!/usr/bin/ksh
for ((i = 1; i < 21; i++))
do
n=$(($i*100))
echo "Trying $n records:"
recs=$(head -$n error.log)
echo "$recs" | wc
done ... (9 Replies)
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)
Hello,
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
envCmd="-e \"${line}\" "
runCmd=$runCmd$envCmd
echo $runCmd # here concatenation works fine
done
echo... (3 Replies)
Discussion started by: czabak
3 Replies
LEARN ABOUT X11R4
nanf
NAN(3) Linux Programmer's Manual NAN(3)NAME
nan, nanf, nanl - return 'Not a Number'
SYNOPSIS
#include <math.h>
double nan(const char *tagp);
float nanf(const char *tagp);
long double nanl(const char *tagp);
Link with -lm.
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
nan(), nanf(), nanl():
_ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
DESCRIPTION
These functions return a representation (determined by tagp) of a quiet NaN. If the implementation does not support quiet NaNs, these
functions return zero.
The call nan("char-sequence") is equivalent to:
strtod("NAN(char-sequence)", NULL);
Similarly, calls to nanf() and nanl() are equivalent to analogous calls to strtof(3) and strtold(3).
The argument tagp is used in an unspecified manner. On IEEE 754 systems, there are many representations of NaN, and tagp selects one. On
other systems it may do nothing.
VERSIONS
These functions first appeared in glibc in version 2.1.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
+----------------------+---------------+----------------+
|Interface | Attribute | Value |
+----------------------+---------------+----------------+
|nan(), nanf(), nanl() | Thread safety | MT-Safe locale |
+----------------------+---------------+----------------+
CONFORMING TO
C99, POSIX.1-2001, POSIX.1-2008. See also IEC 559 and the appendix with recommended functions in IEEE 754/IEEE 854.
SEE ALSO isnan(3), strtod(3), math_error(7)COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the
latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
GNU 2016-03-15 NAN(3)