10-30-2001
power function in C
Hi,
I wrote a small program to find 2 to the power of 3,
when I tried to execute the following error occured.
How can I solve this problem?
$ cat t1.c
#include <math.h>
#include<stdio.h>
main()
{
int a=2;
int b=3;
int c;
c = a ^ b; /* if i use ** instead of ^ also the same problem */
printf("%10f",c);
}
$ cc -o t1 t1.c
$ a.out
Floating exception(coredump)
$
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I would like to use a power function in Bash in an awk '{ } .
e.g pow(2,3)=8
Any suggestion? I try to find online resources but most of them stated by using BC.
Please advise. Thanks. (3 Replies)
Discussion started by: ahjiefreak
3 Replies
2. Shell Programming and Scripting
Hi ,
I have three funcions f1, f2 and f3 .
f1 calls f2 and f2 calls f3 .
I have a global variable "period" which i want to pass to f3 .
Can i pass the variable directly in the definition of f3 ?
Pls help .
sars (4 Replies)
Discussion started by: sars
4 Replies
3. Shell Programming and Scripting
I have two scripts. script1.sh looks
--------------------------------
#!/bin/bash
display()
{
echo "Welcome to Unix"
}
display
-----------------------------
Script2.sh
#!/bin/bash
sh script1.sh //simply calling script1.sh
------------------------------ (1 Reply)
Discussion started by: mvictorvijayan
1 Replies
4. Shell Programming and Scripting
This is my function which is creating three variables based on counter & writing these variable to database by calling another function writeRecord
but only one record is getting wrote in DB.... Please advise ASAP...:confused:
function InsertFtg
{
FTGSTR=""
echo "Saurabh is GREAT $#"
let... (2 Replies)
Discussion started by: omkar.sonawane
2 Replies
5. Programming
In gdb, I can call one function with command "call", but how can I step in the function? I don't want to restart the program, but the function had been executed, gdb will execute next statement, and I don't know how to recall the function. (4 Replies)
Discussion started by: 915086731
4 Replies
6. Shell Programming and Scripting
I have a script which does gunzip, zip and untar.
Input to the script is file name and file directory (where file is located)
I am reading the input parameters as follows:
FILENAME=$1
FILEDIR=$2
I have created 3 functions that are as follows:
1) gunzip file
2) unzip file... (2 Replies)
Discussion started by: pinnacle
2 Replies
7. Shell Programming and Scripting
Dear All.
I have a script, which process files one by one. In the script I have two functions.
one sftp files to different server
the other from existing file create file with different name.
My question is:
Will sftp function recognize files names , which are created in another... (1 Reply)
Discussion started by: digioleg54
1 Replies
8. Shell Programming and Scripting
Hi,
I am having script which contains many functions. Need to print each function name at the starting of the function. Like below,
functionname()
{
echo "functionname"
commands....
}
I've tried like below,
func=`grep "()" scriptname | cut -d "(" -f1`
for i in $func
do
nawk -v... (4 Replies)
Discussion started by: Sumanthsv
4 Replies
9. Shell Programming and Scripting
Hi All,
Good Day, seeking for your assistance on how to not perform my 2nd, 3rd,4th etc.. function if my 1st function is in else condition.
#Body
function1()
{
if
then
echo "exist"
else
echo "not exist"
}
#if not exist in function1 my all other function will not proceed.... (4 Replies)
Discussion started by: meister29
4 Replies
LEARN ABOUT OPENSOLARIS
power
power(9E) Driver Entry Points power(9E)
NAME
power - power a device attached to the system
SYNOPSIS
#include <sys/ddi.h>
#include <sys/sunddi.h>
int prefixpower(dev_info_t *dip, int component, int level);
INTERFACE LEVEL
Solaris DDI specific (Solaris DDI). This entry point is required. If the driver writer does not supply this entry point, the value NULL
must be used in the cb_ops(9S) structure instead.
PARAMETERS
dip Pointer to the device's dev_info structure.
component Component of the driver to be managed.
level Desired component power level.
DESCRIPTION
The power(9E) function is the device-specific Power Management entry point. This function is called when the system wants the driver to set
the power level of component to level.
The level argument is the driver-defined power level to which the component needs to be set. Except for power level 0, which is interpreted
by the framework to mean "powered off," the interpretation of level is entirely up to the driver.
The component argument is the component of the device to be power-managed. The interpretation of component is entirely up to the driver.
When a requested power transition would cause the device to lose state, the driver must save the state of the device in memory. When a
requested power transition requires state to be restored, the driver must restore that state.
If a requested power transition for one component requires another component to change power state before it can be completed, the driver
must call pm_raise_power(9F) to get the other component changed, and the power(9E) entry point must support being re-entered.
If the system requests an inappropriate power transition for the device (for example, a request to power down a device which has just
become busy), then the power level should not be changed and power should return DDI_FAILURE.
RETURN VALUES
The power() function returns:
DDI_SUCCESS Successfully set the power to the requested level.
DDI_FAILURE Failed to set the power to the requested level.
CONTEXT
The power() function is called from user or kernel context only.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface stability |Committed |
+-----------------------------+-----------------------------+
SEE ALSO
attach(9E), detach(9E), pm_busy_component(9F), pm_idle_component(9F), pm_raise_power(9F), cb_ops(9S)
Writing Device Drivers
Using Power Management
SunOS 5.11 12 Dec 2003 power(9E)