std::numeric_limits::min_exponent10
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                    < cpp | types | numeric limits
                    
                                                            
                    | static const int min_exponent10; | (until C++11) | |
| static constexpr int min_exponent10; | (since C++11) | |
The value of std::numeric_limits<T>::min_exponent10 is the lowest negative number n such that 10n
 is a valid normalized value of the floating-point type T. 
[edit] Standard specializations
| T | value of std::numeric_limits<T>::min_exponent10 | 
| /* non-specialized */ | 0 | 
| bool | 0 | 
| char | 0 | 
| signed char | 0 | 
| unsigned char | 0 | 
| wchar_t | 0 | 
| char16_t | 0 | 
| char32_t | 0 | 
| short | 0 | 
| unsigned short | 0 | 
| int | 0 | 
| unsigned int | 0 | 
| long | 0 | 
| unsigned long | 0 | 
| long long | 0 | 
| unsigned long long | 0 | 
| float | FLT_MIN_10_EXP | 
| double | DBL_MIN_10_EXP | 
| long double | LDBL_MIN_10_EXP | 
[edit] Example
Demonstrates the relationships of min_exponent, min_exponent10, min, and radix for the type float:
Run this code
#include <iostream> int main() { std::cout << "min() = " << std::numeric_limits<float>::min() << '\n' << "min_exponent10 = " << std::numeric_limits<float>::min_exponent10 << '\n' << std::hexfloat << "min() = " << std::numeric_limits<float>::min() << '\n' << "min_exponent = " << std::numeric_limits<float>::min_exponent << '\n'; }
Output:
min() = 1.17549e-38 min_exponent10 = -37 min() = 0x1p-126 min_exponent = -125
[edit] See also
| [static] | one more than the smallest negative power of the radix that is a valid normalized floating-point value (public static member constant) | 
| [static] | one more than the largest integer power of the radix that is a valid finite floating-point value (public static member constant) | 
| [static] | the largest integer power of 10 that is a valid finite floating-point value (public static member constant) | 


