README
¶
Floats
Package bigfloat provides the implementation of a few additional operations (square root, exponentiation, natural logarithm, exponential function) for the standard library big.Float type.
Install
go get github.com/ALTree/bigfloat
Please note that bigfloat requires Go >= 1.5 (since the big.Float type is not available in previous versions).
Example
package main
import (
"fmt"
"math/big"
"github.com/ALTree/bigfloat"
)
// In this example, we'll compute the value of the
// trascendental number 2 ** √2, also known as
// the Gelfond–Schneider constant, to 1000 bits.
func main() {
// Work with 1000 binary digits of precision.
const prec = 1000
two := big.NewFloat(2).SetPrec(prec)
// Compute √2.
// Sqrt uses the argument's precision.
sqrtTwo := bigfloat.Sqrt(two)
// Compute 2 ** √2
// Pow uses the first argument's precision.
gsc := bigfloat.Pow(two, sqrtTwo)
// Print gsc, truncated to 60 decimal digits.
fmt.Printf("gsc = %.60f...\n", gsc)
}
outputs
gsc = 2.665144142690225188650297249873139848274211313714659492835980...
Documentation
Documentation
¶
Overview ¶
Package bigfloat provides the implementation of a few additional operations for the standard library big.Float type.
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func Exp ¶
Exp returns a big.Float representation of exp(z). Precision is the same as the one of the argument. The function returns +Inf when z = +Inf, and 0 when z = -Inf.
func Log ¶
Log returns a big.Float representation of the natural logarithm of z. Precision is the same as the one of the argument. The function panics if z is negative, returns -Inf when z = 0, and +Inf when z = +Inf
Types ¶
This section is empty.
Source Files