Questions tagged [internal-representation]
23 questions
0
votes
3 answers
Subtraction of 2 negative integer (two's complement) never overflowing
I came across this in a computer architecture textbook:
Subtracting a strictly negative integer from another strictly negative integer (in two's complement) will never overflow.
The textbook doesn't go on to explain this assertion. It piqued my…
David Chouinard
- 6,466
- 8
- 43
- 61
0
votes
3 answers
Incorrect result when using %d placeholder in a pow() function in C
I'm trying to finish some basic coding exercise and I have already figured out how to fix it but I would just really like to understand what's going on.
#include
#include
int main(void) {
int first, second, third, fourth,…
ddp17
- 41
- 4
0
votes
2 answers
About int and unsigned int
There are the following programs：
#include
int main(void)
{
int i=2147483647;
unsigned int j=4294967295;
printf("%d %d %d\n",i,i+1,i+2);
printf("%u %u %u\n",j,j+1,j+2);
return 0;
}
Why i+2 is not equal to -2147483646 ?
why…
fuyingwei
- 27
- 1
0
votes
1 answer
Soot - Map from java class to jimple
With the following code I can get the jimple representation of a java .class file:
soot.Main.main(args);
SootClass mainClass = Scene.v().getMainClass();
String methodSignature = "void main(java.lang.String[])";
…
MissSirius
- 152
- 11
0
votes
2 answers
Convert the internal representation of a float stored in an integer to an actual float
I have the internal representation of a float stored in a uint32_t. Suppose we have two of them with those conditions. I want to sum the two floats represented by the uint32_t and then store their internal representation inside another uint32_t.…
0
votes
0 answers
How different computers know which signed integers representation was used by each other
How different computers know which signed integers representation was used by each other?
For example, if I send two's complement method encoded inetegers via network, how does clients know that it was two's complement method instead of, for…
FrozenHeart
- 19,844
- 33
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- 242
0
votes
3 answers
C++ Writing an Interpreter - determining loops target for break statement c++
I am writing a simple program interpreter in c++. When I am building the internal representation of the program and I get a break statement, how do I determine the encompassing loops target location?
void Imp::whilestmt()
{
Expr *pExpr;
…
Samuel French
- 665
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- 22
-2
votes
4 answers
I learned that in C language char type ranges from -128 to 127, but it doesn't seem like that
This might be a very basic problem, but I couldn't manage to.
Here is what I am working with.
#include
int main(void)
{
char c1, c2;
int s;
c1 = 128;
c2 = -128;
s = sizeof(char);
printf("size of char: %d\n", s);
…
agongji
- 117
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