Espaços nominais
Variantes
Acções

FE_DIVBYZERO, FE_INEXACT, FE_INVALID, FE_OVERFLOW, FE_UNDERFLOW, FE_ALL_EXCEPT

Da cppreference.com
< c‎ | numeric‎ | fenv

 
 
 
Flutuando ponto ambiente
Funções
Original:
Functions
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feclearexcept(C99)
fetestexcept(C99)
feraiseexcept(C99)
fegetexceptflag
fesetexceptflag
(C99)
(C99)
fegetround
fesetround
(C99)
(C99)
fegetenv
fesetenv
(C99)
feholdexcept(C99)
feupdateenv(C99)
Constantes de macros
Original:
Macro constants
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FE_ALL_EXCEPT
FE_DIVBYZERO
FE_INEXACT
FE_INVALID
FE_OVERFLOW
FE_UNDERFLOW
(C99)
FE_DOWNWARD
FE_TONEAREST
FE_TOWARDZERO
FE_UPWARD
(C99)
FE_DFL_ENV(C99)
 
Defined in header <<fenv.h>>
#define FE_DIVBYZERO    /*implementation defined power of 2*/
#define FE_INEXACT      /*implementation defined power of 2*/
#define FE_INVALID      /*implementation defined power of 2*/
#define FE_OVERFLOW     /*implementation defined power of 2*/
#define FE_UNDERFLOW    /*implementation defined power of 2*/
#define FE_ALL_EXCEPT  FE_DIVBYZERO | FE_INEXACT | \

                       FE_INVALID | FE_OVERFLOW |  \

                       FE_UNDERFLOW
Todas essas constantes macro (exceto FE_ALL_EXCEPT) expandir para inteiros expressões constantes que são potências distintas de 2, que identificam todas as suportadas exceções de ponto flutuante. Cada macro é definida somente se for suportado.
Original:
All these macro constants (except FE_ALL_EXCEPT) expand to integer constant expressions that are distinct powers of 2, which uniquely identify all supported floating-point exceptions. Each macro is only defined if it is supported.
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O FE_ALL_EXCEPT macro constante, que se expande para o OR bit a bit de todos FE_* outro, é sempre definida e é zero se exceções de ponto flutuante não são suportados pela implementação.
Original:
The macro constant FE_ALL_EXCEPT, which expands to the bitwise OR of all other FE_*, is always defined and is zero if floating-point exceptions are not supported by the implementation.
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Constante
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Constant
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Explanation
FE_DIVBYZERO
divisão por zero ocorreu durante a operação antes de ponto flutuante
Original:
division by zero occurred during the earlier floating-point operation
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FE_INEXACT
inexato resultado: arredondamento era necessário para armazenar o resultado da operação anterior de ponto flutuante
Original:
inexact result: rounding was necessary to store the result of the earlier floating-point operation
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FE_INVALID
operação inválida: a operação antes de ponto flutuante não poderia realizada
Original:
invalid operation: the earlier floating-point operation could not performed
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FE_OVERFLOW
o resultado da operação de ponto flutuante anterior era grande demais para ser representável
Original:
the result of the earlier floating-point operation was too large to be representable
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FE_UNDERFLOW
o resultado da operação anterior de ponto flutuante foi subnormal
Original:
the result of the earlier floating-point operation was subnormal
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FE_ALL_EXCEPT
OR bit a bit de todas as exceções de ponto flutuante
Original:
bitwise OR of all supported floating-point exceptions
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A implementação pode definir constantes macro adicionais em <fenv.h> para identificar outras exceções de ponto flutuante. Todas as constantes de tais começam com FE_ seguido por, pelo menos, uma letra maiúscula.
Original:
The implementation may define additional macro constants in <fenv.h> to identify additional floating-point exceptions. All such constants begin with FE_ followed by at least one uppercase letter.
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[editar] Exemplo

[editar] Veja também

C++ documentation for floating point exception macros