NAME¶

std::numeric_limits::lowest - std::numeric_limits::lowest

Synopsis¶

static constexpr T lowest() noexcept; (since C++11)

Returns the lowest finite value representable by the numeric type T, that is, a
finite value x such that there is no other finite value y where y < x. This is
different from std::numeric_limits<T>::min() for floating-point types. Only
meaningful for bounded types.

Return value¶

T std::numeric_limits<T>::lowest()
/* non-specialized */ (C++11) T()
bool (C++11) false
char (C++11) CHAR_MIN
signed char (C++11) SCHAR_MIN
unsigned char (C++11) 0
wchar_t (C++11) WCHAR_MIN
char8_t (C++20) 0
char16_t (C++11) 0
char32_t (C++11) 0
short (C++11) SHRT_MIN
unsigned short (C++11) 0
int (C++11) INT_MIN
unsigned int (C++11) 0
long (C++11) LONG_MIN
unsigned long (C++11) 0
long long (C++11) LLONG_MIN
unsigned long long (C++11) 0
float (C++11) -FLT_MAX
double (C++11) -DBL_MAX
long double (C++11) -LDBL_MAX

Notes¶

For every standard C++ floating-point type T std::numeric_limits<T>::lowest() ==
-std::numeric_limits<T>::max(), but this does not necessarily have to be the case
for any third-party specialization.

Example¶

Demonstrates min, max, and lowest for floating-point types

// Run this code

#include <limits>
#include <iostream>
int main()
{

std::cout << "std::numeric_limits<T>::min():\n"
<< "\tfloat: " << std::numeric_limits<float>::min()
<< " or " << std::hexfloat << std::numeric_limits<float>::min() << '\n'
<< "\tdouble: " << std::defaultfloat << std::numeric_limits<double>::min()
<< " or " << std::hexfloat << std::numeric_limits<double>::min() << '\n';
std::cout << "std::numeric_limits<T>::lowest():\n"
<< "\tfloat: " << std::defaultfloat << std::numeric_limits<float>::lowest()
<< " or " << std::hexfloat << std::numeric_limits<float>::lowest() << '\n'
<< "\tdouble: " << std::defaultfloat << std::numeric_limits<double>::lowest()
<< " or " << std::hexfloat << std::numeric_limits<double>::lowest() << '\n';
std::cout << "std::numeric_limits<T>::max():\n"
<< "\tfloat: " << std::defaultfloat << std::numeric_limits<float>::max()
<< " or " << std::hexfloat << std::numeric_limits<float>::max() << '\n'
<< "\tdouble: " << std::defaultfloat << std::numeric_limits<double>::max()
<< " or " << std::hexfloat << std::numeric_limits<double>::max() << '\n';
}

Output:¶

std::numeric_limits<T>::min():
float: 1.17549e-38 or 0x1p-126
double: 2.22507e-308 or 0x1p-1022
std::numeric_limits<T>::lowest():
float: -3.40282e+38 or -0x1.fffffep+127
double: -1.79769e+308 or -0x1.fffffffffffffp+1023
std::numeric_limits<T>::max():
float: 3.40282e+38 or 0x1.fffffep+127
double: 1.79769e+308 or 0x1.fffffffffffffp+1023

See also¶

min returns the smallest finite value of the given type
[static] (public static member function)
denorm_min returns the smallest positive subnormal value of the given floating-point
[static] type
(public static member function)
max returns the largest finite value of the given type
[static] (public static member function)