Espaços nominais
Variantes
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signbit

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< c‎ | numeric‎ | math

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C
 
Numéricos
 
Funções matemáticas comuns
Funções
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Functions
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Operações básicas
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Basic operations
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Funções exponenciais
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Exponential functions
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Funções de poder
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Power functions
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Funções trigonométricas e hiperbólicas
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Trigonometric and hyperbolic functions
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Erro e funções gamma
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Error and gamma functions
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Número inteiro mais próximo de operações de ponto flutuante
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Nearest integer floating point operations
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Flutuando funções de manipulação de pontos
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Floating point manipulation functions
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Classificação
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Classification
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signbit
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Constantes de macros
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Macro constants
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Definido no cabeçalho <math.h>
#define signbit(arg) /* implementation defined */
Determina se o dado arg número de ponto flutuante é negativo. A macro retorna um valor integral.
Original:
Determines if the given floating point number arg is negative. The macro returns an integral value.
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[editar] Parâmetros

arg -
flutuando valor de ponto
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floating point value
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[editar] Valor de retorno

Valor integral diferente de zero se arg é negativo, ​0​ contrário
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Nonzero integral value if arg is negative, ​0​ otherwise
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[editar] Veja também
valor absoluto de um valor de ponto flutuante (|x|)
Original:
absolute value of a floating point value (|x|)
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copia o sinal de um valor de ponto flutuante
Original:
copies the sign of a floating point value
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(função) [edit]
C++ documentation for signbit
Obtida de "https://pt.cppreference.com/mwiki/index.php?title=c/numeric/math/signbit&oldid=19727"