kotlin-stdlib/kotlin.math/acosh

acosh

fun acosh(x: Double): Double
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fun acosh(x: Float): Float
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fun acosh(x: Double): Double
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inline fun acosh(x: Float): Float
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inline fun acosh(x: Double): Double
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inline fun acosh(x: Float): Float
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external fun acosh(x: Double): Double
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external fun acosh(x: Float): Float
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Computes the inverse hyperbolic cosine of the value x.

The returned value is positive y such that cosh(y) == x.

Special cases:

  • acosh(NaN) is NaN

  • acosh(x) is NaN when x < 1

  • acosh(+Inf) is +Inf

Since Kotlin

1.2