logo
down
shadow

Why does my summation program behaves weird?


Why does my summation program behaves weird?

By : Cindy LaTerra
Date : November 22 2020, 07:01 PM
Hope this helps Yesterday, I had to do a math introduction test, where I had to calculate the cardinality of a summation. I was lazy to write it out and I thought I'd just write a small C program to solve it. I felt confident that'll work, since I did much more complex programs, but I just can't get it to work. , This:
code :
int n = 2 * i + 1;
while(n <= 36){
    printf("%d\n", n);
    i++;
    n = 2 * i + 1;
}


Share : facebook icon twitter icon
set erase behaves weird

set erase behaves weird


By : Ram Mittal
Date : March 29 2020, 07:55 AM
This might help you You have an invalid set iterator. The standard prescribes no rules for what happens when you dereference an invalid set iterator, so the behavior is undefined. It is allowed to return 20. It is allowed to do anything else, for that matter.
GlassPane behaves weird

GlassPane behaves weird


By : Radu Zamfir
Date : March 29 2020, 07:55 AM
this will help Check out Backgrounds With Transparency for the probable reason for the problem and a couple of solutions. Basically because you are using a transparent background you need to make sure you paint the background of the glass pane yourself.
So I would create a custom panel to use as your glass pane so you can manage the painting of the background. Then you set this panel as the glass pane of the frame.
re.findall behaves weird

re.findall behaves weird


By : Utchi
Date : March 29 2020, 07:55 AM
To fix the issue you can do The source string is:
code :
s = r'abc123d, hello 3.1415926, this is my book'
print re.findall(r'-?[0-9]+(?:\.[0-9]*)?|-?\.[0-9]+',s)
import re,ast
s = r'abc123d, hello 3.1415926, this is my book'
print map(ast.literal_eval,re.findall(r'-?[0-9]+(?:\.[0-9]*)?|-?\.[0-9]+',s))
Weird output from double summation code

Weird output from double summation code


By : t0n1987
Date : March 29 2020, 07:55 AM
wish of those help Vectorization power for the troublesome summations.
The first equation:
code :
# double summation in numerator (including multiplier 2)
diag(cr) <- 0
double_sum.1 <- c(crossprod(wg, cr %*% wg))

# single summation in denominator
single_sum.1 <- c(crossprod(wg))

# result
double_sum.1 / (1 - single_sum.1)
dcv <- sqrt(diag(cv))

# single summation in numerator
single_sum.2 <- c(crossprod(wg * dcv))

# double summation in denominator (including multiplier 2)
double_sum.2 <- sum(tcrossprod(wg * dcv)) - single_sum.2

# result
PV <- c(crossprod(wg, cv %*% wg))
(PV - single_sum.2) / double_sum.2
i in 1:(length(wg)-1)
j in (i+1):length(wg)
dcv <- c(0.02, 0.03, 0.04)
cr <- diag(3)
sum_i (1 - w_i) ^ 2 * sigma_i^2
ODP .NET behaves weird

ODP .NET behaves weird


By : pablo-xor
Date : March 29 2020, 07:55 AM
wish helps you Your connection timeout is extremely low, 8 seconds in general and 10 seconds for the commands you are issuing, try increasing it to maybe a minute to see what happens. I have no idea how heavy your algorithms are, but it is enough that one thread somewhere fails with a query in less than 8 seconds and you will get that exception.
Also, I cannot find documentation stating that ODP.net is not thread-safe, but I cannot find any documentation saying it is either, so if nothing else helps try this change:
Related Posts Related Posts :
  • Efficient way to find divisibility
  • Whats the fastest, portable way to hash pointers we know are pointer aligned to a fixed size int?
  • How to determine values saved on the stack?
  • Thread scheduling C
  • C - converting to 2s complement
  • wireless networks c program
  • From where does the uboot get the information about flash, RTC, RAM in uboot/kernel development
  • printf behaviour in C
  • Measure size and way-order of L1 and L2 caches
  • Efficient copy of entire directory
  • Efficient way to create/unpack large bitfields in C?
  • getnameinfo prototype asks for sockaddr not sockaddr_in?
  • Linked List Sorting with Strings In C
  • Typecasting a floating value or using the math.h floor* functions?
  • Problem implementing sorting algorithm in C with an array of structs
  • How to copy a ram_base file to disk efficiently
  • How to fix casting a pointer to an integer?
  • How to round floating point numbers to the nearest integer in C?
  • PIC C - Sending 200 values over USB, but it only sends 25 or so of them
  • How do you return a string from a function correctly in Dynamic C?
  • Monotonic clock on IRIX
  • setsockopt (sys/socket.h)
  • How to make C program wait (on Linux)?
  • i find a problem using atoi() method in ansi c?
  • Why is this array being initialized in an odd way?
  • How to execute commands in chroot?
  • Microsecond (or one ms) time resolution on an embedded device (Linux Kernel)
  • Question about variable definitions in functions
  • SMTP on C: STARTTLS via OpenSSL
  • fetch value of ipaddress
  • Binary expressions in C
  • Why do char * and char ** have the same value?
  • problem in allocating kernel memory by malloc() from user space?
  • dangling pointer, reason for value change after free()?
  • How to compile C program with multiple files in Xcode
  • Can you make an incrementing compiler constant?
  • Reading data from text file in C
  • SQLite's test code to production code ratio
  • Displaying an inverted pyramid of asterisks
  • sd spi mode in C language
  • printf("%2d") in C programming
  • Add a certain number of bytes to a void pointer in C
  • How should I protect against hard link attacks?
  • What's the difference between unsigned long/long/int in c/c++?
  • Get an input from keyboard without 'return' in C
  • How to convert if to switch-case in c
  • C: swapping two pointer value
  • What does \x mean in c/c++?
  • run a command line argument prog
  • Pass a dynamic structure by reference? [C]
  • C + GUI + Mac OS
  • strstr matching first occurrence in c
  • Why does it NOT give a segmentation violation?
  • Usage of EOF in C
  • Linux Bluetooth programming
  • program that writes the even and odd numbers
  • C Socket Programming, problems with select() and fd_set
  • Ways to divide the high/low byte from a 16bit address?
  • Single line comment - unable to compile on solaris
  • Linking the Linker script file to source code
  • shadow
    Privacy Policy - Terms - Contact Us © 35dp-dentalpractice.co.uk