hi,
I have made a small C program that make use of malloc and free for processing bitmap images. when i try to run the program, I am getting a error something like
*** glibc detected *** free(): invalid next size (normal): 0x0000000000503e70 ***
I am not sure of which free() is causing this... (1 Reply)
when i try to use the class i wrote, i either get this:
*** glibc detected *** double free or corruption: 0x40236ff4 ***
and the proccess exits with an error code of 0;
or it segfaults. could someone look at my header file (with imp.) to give me some insight as to why its not working?
... (19 Replies)
Hi All,
My latest assignment (practice not coursework!) is to write prototype interactive exam/test console application. I've used structs to store the question information (not sure if this was the best way to do it?) and I have the following code that outputs each question and it's possible... (0 Replies)
Hi, i'm trying to copy a struct into a binary file using the unix instruction write, so i declare and fill the struct "superbloque" in one function "initSB" and then i pass the pointer to another function called bwrite (for block write) which calls write. The problem is that i call the function... (2 Replies)
In a well-known book on the C language, there is an example of an efficient method for using a struct member as an argument to a function. (I'm a C noob, but I believe the correct terminology might be: use call-by-reference instead of call-by-value.) The function is printf.
Anyway, here's a... (5 Replies)
Hi guys, I'm trying to understand pointers in C and made a simple example and I've problems with It.
Can someone help?
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
int f1(char **str_);
int main(int argc, char **argv)
{
char *str = NULL;
f1(&str);
... (3 Replies)
I am facing a problem of memory corruption. The loop runs for the first time but does not go through the second time. What could be the problem?
for(int z=0;z<2;z++)
{
fp=fopen("poly.dat","r");
/*do something which reads this file into a 2D array*/
fclose(fp);
... (10 Replies)
Currently I test a shared library vendor provided in linux , the following is the simple source :
#include <iostream>
using namespace std;
extern int test1();
extern int test2();
int main()
{
cout << "hello world" << endl ;
return 0 ;
cout << "Test 1" << endl;
... (6 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
I'm doing aproximation of derivative called five-point stencil. For every value of x, in interval , in step... (0 Replies)
Discussion started by: antonija
0 Replies
LEARN ABOUT REDHAT
pdl::gslsf::expint
EXPINT(3) User Contributed Perl Documentation EXPINT(3)NAME
PDL::GSLSF::EXPINT - PDL interface to GSL Special Functions
DESCRIPTION
This is an interface to the Special Function package present in the GNU Scientific Library.
SYNOPSIS FunctionsFUNCTIONS
gsl_sf_expint_E1
Signature: (double x(); double [o]y(); double [o]e())
E_1(x) := Re[ Integrate[ Exp[-xt]/t, {t,1,Infinity}] ]
gsl_sf_expint_E2
Signature: (double x(); double [o]y(); double [o]e())
E_2(x) := Re[ Integrate[ Exp[-xt]/t^2, {t,1,Infity}] ]
gsl_sf_expint_Ei
Signature: (double x(); double [o]y(); double [o]e())
Ei(x) := PV Integrate[ Exp[-t]/t, {t,-x,Infinity}]
gsl_sf_Shi
Signature: (double x(); double [o]y(); double [o]e())
Shi(x) := Integrate[ Sinh[t]/t, {t,0,x}]
gsl_sf_Chi
Signature: (double x(); double [o]y(); double [o]e())
Chi(x) := Re[ M_EULER + log(x) + Integrate[(Cosh[t]-1)/t, {t,0,x}] ]
gsl_sf_expint_3
Signature: (double x(); double [o]y(); double [o]e())
Ei_3(x) := Integral[ Exp[-t^3], {t,0,x}]
gsl_sf_Si
Signature: (double x(); double [o]y(); double [o]e())
Si(x) := Integrate[ Sin[t]/t, {t,0,x}]
gsl_sf_Ci
Signature: (double x(); double [o]y(); double [o]e())
Ci(x) := -Integrate[ Cos[t]/t, {t,x,Infinity}]
gsl_sf_atanint
Signature: (double x(); double [o]y(); double [o]e())
AtanInt(x) := Integral[ Arctan[t]/t, {t,0,x}]
AUTHOR
This file copyright (C) 1999 Christian Pellegrin <chri@infis.univ.trieste.it> All rights reserved. There is no warranty. You are allowed to
redistribute this software / documentation under certain conditions. For details, see the file COPYING in the PDL distribution. If this
file is separated from the PDL distribution, the copyright notice should be included in the file.
The GSL SF modules were written by G. Jungman.
perl v5.8.0 2003-01-29 EXPINT(3)