Inheritance diagram for std::numeric_limits< Type >:
Static Public Member Functions | |
| static Type | min () throw () |
| static Type | max () throw () |
| static Type | epsilon () throw () |
| static Type | round_error () throw () |
| static Type | infinity () throw () |
| static Type | quietNaN () throw () |
| static Type | signalingNaN () throw () |
| static Type | denorm_min () throw () |
Static Public Attributes | |
| static const bool | is_specialized |
| static const int | digits |
| static const int | digits10 |
| static const bool | is_signed |
| static const bool | is_integer |
| static const bool | is_exact |
| static const int | radix |
| static const int | min_exponent |
| static const int | min_exponent10 |
| static const int | max_exponent |
| static const int | max_exponent10 |
| static const bool | has_infinity |
| static const bool | has_quietNaN |
| static const bool | has_signalingNaN |
| static const float_denorm_style | has_denorm |
| static const bool | has_denorm_loss |
| static const bool | is_iec559 |
| static const bool | is_bounded |
| static const bool | is_modulo |
| static const bool | traps |
| static const bool | tinyness_before |
| static const float_round_style | round_style |
This class allows a program to obtain information about the representation of a fundamental type on a given platform. For non-fundamental types, the functions will return 0 and the data members will all be false.
Definition at line 286 of file limits.
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The minimum positive denormalized value. For types where |
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The machine epsilon: the difference between 1 and the least value greater than 1 that is representable. |
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The representation of positive infinity, if |
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The maximum finite value. |
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The minimum finite value, or for floating types with denormalization, the minimum positive normalized value. |
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The representation of a quiet "Not a Number," if |
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The maximum rounding error measurement (see LIA-1). |
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The representation of a signaling "Not a Number," if |
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The number of |
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The number of base 10 digits that can be represented without change. |
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See std::float_denorm_style for more information. |
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"True if loss of accuracy is detected as a denormalization loss, rather than as an inexact result." [18.2.1.2]/42 |
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True if the type has a representation for positive infinity. |
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True if the type has a representation for a quiet (non-signaling) "Not a Number." |
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True if the type has a representation for a signaling "Not a Number." |
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"True if the set of values representable by the type is finite. All built-in types are bounded, this member would be false for arbitrary precision types." [18.2.1.2]/54 |
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True if the type uses an exact representation. "All integer types are exact, but not all exact types are integer. For example, rational and fixed-exponent representations are exact but not integer." [18.2.1.2]/15 |
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True if-and-only-if the type adheres to the IEC 559 standard, also known as IEEE 754. (Only makes sense for floating point types.) |
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True if the type is integer. |
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True if the type is modulo, that is, if it is possible to add two positive numbers and have a result that wraps around to a third number that is less. Typically false for floating types, true for unsigned integers, and true for signed integers. |
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True if the type is signed. |
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This will be true for all fundamental types (which have specializations), and false for everything else. |
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The maximum positive integer such that |
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The maximum positive integer such that 10 raised to that power is in the range of representable finite floating point numbers. |
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The minimum negative integer such that |
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The minimum negative integer such that 10 raised to that power is in the range of normalized floating point numbers. |
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For integer types, specifies the base of the representation. For floating types, specifies the base of the exponent representation. |
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See std::float_round_style for more information. This is only meaningful for floating types; integer types will all be round_toward_zero. |
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True if tinyness is detected before rounding. (see IEC 559) |
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True if trapping is implemented for this type. |
1.4.2