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std::fdim

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Biblioteca numéricos
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De ponto flutuante ambiente
Números complexos
Matrizes numéricas
Pseudo-aleatório de geração de números
Tempo de compilação aritmética racional (C++11)
Genéricos operações numéricas
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Generic numeric operations
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iota(C++11)
accumulate
inner_product
adjacent_difference
partial_sum
 
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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remainder(C++11)
remquo(C++11)
fma(C++11)
fmax(C++11)
fmin(C++11)
fdim(C++11)
nan
nanf
nanl
(C++11)
(C++11)
(C++11)
Funções exponenciais
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Exponential functions
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exp
exp2(C++11)
expm1(C++11)
log
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Power functions
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sqrt
cbrt(C++11)
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Funções trigonométricas e hiperbólicas
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Trigonometric and hyperbolic functions
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sinh
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Erro e funções gamma
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Error and gamma functions
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erf(C++11)
erfc(C++11)
lgamma(C++11)
tgamma(C++11)
Número inteiro mais próximo de operações de ponto flutuante
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Nearest integer floating point operations
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ceil
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(C++11)
trunc(C++11)
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(C++11)
Flutuando funções de manipulação de pontos
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Floating point manipulation functions
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ldexp
scalbn
scalbln
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(C++11)
ilogb(C++11)
logb(C++11)
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modf
nextafter
nexttoward
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(C++11)
copysign(C++11)
Classificação / Comparação
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Classification/Comparison
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fpclassify(C++11)
isfinite(C++11)
isinf(C++11)
isnan(C++11)
isnormal(C++11)
signbit(C++11)
isgreater(C++11)
isgreaterequal(C++11)
isless(C++11)
islessequal(C++11)
islessgreater(C++11)
isunordered(C++11)
Constantes de macros
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Macro constants
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FP_NORMAL
FP_SUBNORMAL
FP_ZERO
FP_INFINITE
FP_NAN
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
 
Defined in header <cmath>
float       fdim( float x, float y );
(1) (a partir do C++ 11)
double      fdim( double x, double y );
(2) (a partir do C++ 11)
long double fdim( long double x, long double y );
(3) (a partir do C++ 11)
Promoted    fdim( Arithmetic x, Arithmetic y );
(4) (a partir do C++ 11)
Retorna a diferença positiva entre x e y.
Original:
Returns the positive difference between x and y.
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Isto pode ser implementado como fmax (x - y, 0), por isso, se x ≤ y, o resultado é sempre igual a 0, caso contrário é x - y.
Original:
This could be implemented as fmax (x - y, 0), so if x ≤ y, the result is always equals to 0, otherwise it is x - y.
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4)
Se algum argumento tem tipo integral, ele é convertido para double. Se qualquer outro argumento é long double, em seguida, o tipo de retorno é long double, caso contrário é double.
Original:
If any argument has integral type, it is cast to double. If any other argument is long double, then the return type is long double, otherwise it is double.
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[editar] Parâmetros

x, y -
flutuando valor de ponto
Original:
floating point value
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[editar] Valor de retorno

O valor da diferença positiva.
Original:
The positive difference value.
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[editar] Veja também

calcula o valor absoluto de um valor integral (|x|)
Original:
computes absolute value of an integral value (|x|)
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(função) [edit]
(C++11)
maior de dois valores de ponto flutuante
Original:
larger of two floating point values
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(função) [edit]