odd thing
Author
these not work correctly.
float d = rand()/RAND_MAX;
but int r = rand();
float d = r/RAND_MAX;
these work
but float r = rand();
float d = r/RAND_MAX;
float d =rand()/0x7fff;
why where is the problem?
I am not for sure but i think it is because you are declaring float d two times.
float d = rand()/RAND_MAX;
but int r = rand();
float d = r/RAND_MAX;
I am not well up with rand() but there you have float d = rand()/RAND_MAX and a second that has the same name so the compiler won't know which is which. You need to rename the other float so that it will work [smile].
Edit: also why would you want to assigne two randum number generators together?
float d = rand()/RAND_MAX;
but int r = rand();
float d = r/RAND_MAX;
I am not well up with rand() but there you have float d = rand()/RAND_MAX and a second that has the same name so the compiler won't know which is which. You need to rename the other float so that it will work [smile].
Edit: also why would you want to assigne two randum number generators together?
That's two different snippets (both doing the same thing, but the second is spread out).
I believe that it's not working because your number is getting rounded (since it has an int in it). If you convert to a float or use a float to begin with, it should work fine:
I believe that it's not working because your number is getting rounded (since it has an int in it). If you convert to a float or use a float to begin with, it should work fine:
int r = rand();float d = (float)r/RAND_MAX;//orfloat r = rand();float d = r/RAND_MAX;// orfloat d = (float)rand()/RAND_MAX;
rand()/RAND_MAX
Both terms are integers, thus the compiler generates an integer division. Given that RAND_MAX is always larger than rand(), the result is always integer zero, which then gets converted to a float. You need to explicitely convert one of the terms to a floating-point value to cause a floating-point division to be generated.
rand() / (float)RAND_MAX
Both terms are integers, thus the compiler generates an integer division. Given that RAND_MAX is always larger than rand(), the result is always integer zero, which then gets converted to a float. You need to explicitely convert one of the terms to a floating-point value to cause a floating-point division to be generated.
rand() / (float)RAND_MAX
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