Cast « float « C Data Type Q&A

1. Exracting Interleaved floating point data    stackoverflow.com

For anybody using the cufft library from cuda (or somebody that knows their stuff)- what is the most efficient way to recover data from the interleaved data type cufftComplex? Data is added ...

2. DWORD casting to float after a simple swap?    stackoverflow.com

I want to swap my float exemple: 14 D7 65 01 ----> 65 01 14 D7 The swap is easy to do. I work on a DWORD, I made my swap and ...

3. What is printf's behaviour when printing an int as float?    stackoverflow.com

I am using dev cpp on windows7 to compile my code.

int d = 0x12;
char* e = (char*)&d;
printf("%d %d\n", sizeof (int), sizeof (float));
printf("%p %p\n", &d, (float*)&d);
printf("%p %p %p %p %p\n", &d, &e[0], ...

4. Question for a REAL expert on casting double to float...    bytes.com

Bill Reid I just noticed that my "improved" version of sscanf() doesn't assign floating point numbers properly if the variable assigned to is declared as a "float" rather than a "double". (This never cropped up before, since I rarely use "float"s for anything, and hardly ever use the function for floating-point numbers in the first place; I just was messing around ...

5. Float to int type casting?    bytes.com

Hi, 1 int main() 2 { 3 float a = 17.5; 4 printf("%d\n", a); 5 printf("%d\n", *(int *)&a); 6 return 0; 7 } The output is: 0 1099694080 I could not understand why the first printf prints 0 and the other ,1099694080... I think there is sth different from simple type casting.Is it an undefined behaviour? Please let me understand. Regards. ...

6. Get rid of a (float) cast in timer class    bytes.com

Hi, I have this following class which I use as a timer: #include using namespace std; class chrono { public: chrono() {}; ~chrono() {}; int start(); float freeze(); private: struct timeval before_time, after_time; struct timeval sub_chrono; }; int chrono::start() { return gettimeofday(&before_time, 0); } float chrono::freeze() { gettimeofday(&after_time, 0); timersub(&after_time, &before_time, &sub_chrono); // Possible clean up required here: Remove (float) ...

7. casting Rand () to generate double, float etc.    cboard.cprogramming.com

8. Rounding a float and casting to an int    cboard.cprogramming.com

9. casting float to char    daniweb.com

10. type cast from float to unsigned char* Sample    codeproject.com

The issue is that you are writing in binary mode. Notepad is reading in text mode, so the binary bytes that make up the binary storage version to the float value don't translate. try converting the float to characters first: float buffer = 1.33333; char* str[11]; sprintf(str,"%10.5f",buffer); then write it to the file as text ...