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63 lines
1.6 KiB
Go
63 lines
1.6 KiB
Go
package inf_test
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import (
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"fmt"
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"log"
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)
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import "gopkg.in/inf.v0"
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func ExampleDec_SetString() {
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d := new(inf.Dec)
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d.SetString("012345.67890") // decimal; leading 0 ignored; trailing 0 kept
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fmt.Println(d)
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// Output: 12345.67890
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}
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func ExampleDec_Scan() {
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// The Scan function is rarely used directly;
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// the fmt package recognizes it as an implementation of fmt.Scanner.
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d := new(inf.Dec)
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_, err := fmt.Sscan("184467440.73709551617", d)
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if err != nil {
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log.Println("error scanning value:", err)
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} else {
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fmt.Println(d)
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}
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// Output: 184467440.73709551617
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}
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func ExampleDec_QuoRound_scale2RoundDown() {
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// 10 / 3 is an infinite decimal; it has no exact Dec representation
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x, y := inf.NewDec(10, 0), inf.NewDec(3, 0)
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// use 2 digits beyond the decimal point, round towards 0
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z := new(inf.Dec).QuoRound(x, y, 2, inf.RoundDown)
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fmt.Println(z)
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// Output: 3.33
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}
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func ExampleDec_QuoRound_scale2RoundCeil() {
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// -42 / 400 is an finite decimal with 3 digits beyond the decimal point
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x, y := inf.NewDec(-42, 0), inf.NewDec(400, 0)
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// use 2 digits beyond decimal point, round towards positive infinity
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z := new(inf.Dec).QuoRound(x, y, 2, inf.RoundCeil)
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fmt.Println(z)
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// Output: -0.10
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}
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func ExampleDec_QuoExact_ok() {
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// 1 / 25 is a finite decimal; it has exact Dec representation
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x, y := inf.NewDec(1, 0), inf.NewDec(25, 0)
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z := new(inf.Dec).QuoExact(x, y)
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fmt.Println(z)
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// Output: 0.04
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}
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func ExampleDec_QuoExact_fail() {
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// 1 / 3 is an infinite decimal; it has no exact Dec representation
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x, y := inf.NewDec(1, 0), inf.NewDec(3, 0)
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z := new(inf.Dec).QuoExact(x, y)
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fmt.Println(z)
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// Output: <nil>
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}
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