FP_NORMAL, FP_SUBNORMAL, FP_ZERO, FP_INFINITE, FP_NAN
Da cppreference.com.
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Elemento definito nell'header <math.h>
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#define FP_NORMAL /*implementation defined*/ |
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#define FP_SUBNORMAL /*implementation defined*/ |
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#define FP_ZERO /*implementation defined*/ |
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#define FP_INFINITE /*implementation defined*/ |
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#define FP_NAN /*implementation defined*/ |
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Il
FP_NORMAL
, FP_SUBNORMAL
, FP_ZERO
, FP_INFINITE
, FP_NAN
ciascuna macro rappresentano una categoria distinta di numeri a virgola mobile. Tutti si espandono per un'espressione costante intera.Original:
The
FP_NORMAL
, FP_SUBNORMAL
, FP_ZERO
, FP_INFINITE
, FP_NAN
macros each represent a distinct category of floating-point numbers. They all expand to an integer constant expression.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Constant
Original: Constant The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Explanation |
FP_NORMAL
|
indica che il valore è normale, vale a dire non è un infinito, subnormale, not-a-number o zero
Original: indicates that the value is normal, i.e. not an infinity, subnormal, not-a-number or zero The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
FP_SUBNORMAL
|
indica che il valore è subnormale'
Original: indicates that the value is subnormal The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
FP_ZERO
|
indica che il valore è zero positivo o negativo
Original: indicates that the value is positive or negative zero The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
FP_INFINITE
|
indica che il valore non è rappresentabile dal tipo sottostante (infinito positivo o negativo)
Original: indicates that the value is not representable by the underlying type (positive or negative infinity) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
FP_NAN
|
indica che il valore non-a-numero (NaN)
Original: indicates that the value is not-a-number (NaN) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[modifica] Vedi anche
(C99) |
categorizza il valore dato in virgola mobile Original: categorizes the given floating point value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione) |
C++ documentation for FP_categories
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