cmplx
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cmplx
https://pkg.go.dev/math/cmplx@go1.20.1
Package cmplx provides basic constants and mathematical functions for complex numbers. Special case handling conforms to the C99 standard Annex G IEC 60559-compatible complex arithmetic.
常量
This section is empty.
变量
This section is empty.
函数
func Abs
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Abs returns the absolute value (also called the modulus) of x.
Example
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func Acos
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Acos returns the inverse cosine of x.
func Acosh
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Acosh returns the inverse hyperbolic cosine of x.
func Asin
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Asin returns the inverse sine of x.
func Asinh
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Asinh returns the inverse hyperbolic sine of x.
func Atan
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Atan returns the inverse tangent of x.
func Atanh
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Atanh returns the inverse hyperbolic tangent of x.
func Conj
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Conj returns the complex conjugate of x.
func Cos
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Cos returns the cosine of x.
func Cosh
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Cosh returns the hyperbolic cosine of x.
func Cot
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Cot returns the cotangent of x.
func Exp
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Exp returns e**x, the base-e exponential of x.
Example
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func Inf
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Inf returns a complex infinity, complex(+Inf, +Inf).
func IsInf
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IsInf reports whether either real(x) or imag(x) is an infinity.
func IsNaN
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IsNaN reports whether either real(x) or imag(x) is NaN and neither is an infinity.
func Log
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Log returns the natural logarithm of x.
func Log10
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Log10 returns the decimal logarithm of x.
func NaN
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NaN returns a complex “not-a-number” value.
func Phase
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Phase returns the phase (also called the argument) of x. The returned value is in the range [-Pi, Pi].
func Polar
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Polar returns the absolute value r and phase θ of x, such that x = r * e**θi. The phase is in the range [-Pi, Pi].
Example
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func Pow
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Pow returns x**y, the base-x exponential of y. For generalized compatibility with math.Pow:
Pow(0, ±0) returns 1+0i
Pow(0, c) for real(c)<0 returns Inf+0i if imag(c) is zero, otherwise Inf+Inf i.
func Rect
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Rect returns the complex number x with polar coordinates r, θ.
func Sin
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Sin returns the sine of x.
func Sinh
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Sinh returns the hyperbolic sine of x.
func Sqrt
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Sqrt returns the square root of x. The result r is chosen so that real(r) ≥ 0 and imag(r) has the same sign as imag(x).
func Tan
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Tan returns the tangent of x.
func Tanh
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Tanh returns the hyperbolic tangent of x.
类型
This section is empty.