Top "Numeric-limits" questions

std::numeric_limits is a C++ standard library class that contains traits and information about the built-in numeric types, such as the maximum and minimum representable values, number of digits, and whether the it is a signed type.

maximum value of int

Is there any code to find the maximum value of integer (accordingly to the compiler) in C/C++ like Integer.…

c++ c stl limits numeric-limits
Negative infinity

I'm trying to figure out how to assign the value of negative infinity to a float or double variable. It …

c++ numeric-limits
‘numeric_limits’ was not declared in this scope, no matching function for call to ‘max()’

I compiled this code at home on my mac w/ xcode and there was no provblem. I compile it at …

c++ max ignore cin numeric-limits
Why is the maximum value of an unsigned n-bit integer 2^n-1 and not 2^n?

The maximum value of an n-bit integer is 2n-1. Why do we have the "minus 1"? Why isn't the maximum just 2…

integer programming-languages numeric-limits
Why is FLT_MIN equal to zero?

limits.h specifies limits for non-floating point math types, e.g. INT_MIN and INT_MAX. These values are the …

c floating-point numeric-limits
Where are the limits for Qt types?

Regularly, I could reference limits.h to see what the max is for a certain type, like an int or …

c++ qt limits numeric-limits
warning C4003 and errors C2589 and C2059 on: x = std::numeric_limits<int>::max();

This line works correctly in a small test program, but in the program for which I want it, I get …

c++ visual-c++ max numeric-limits
Syntax error with std::numeric_limits::max

I have class struct definition as follows: #include <limits> struct heapStatsFilters { heapStatsFilters(size_t minValue_ = 0, size_t maxValue_ = …

c++ visual-c++ syntax syntax-error numeric-limits
Why is 0 < -0x80000000?

I have below a simple program: #include <stdio.h> #define INT32_MIN (-0x80000000) int main(void) { long …

c signed numeric-limits numeric-conversion
Why does numeric_limits::min return a negative value for int but positive values for float/double?

Why does numeric_limits::min return a negative value for int, but positive values for e.g. float and double? #…

c++ std numeric-limits