[Java]浮點數的精確度問題

最近工作有遇到一些商務部分，出現了精確度問題，運算時使用 <code class="c-mrkdwn__code" data-stringify-type="code" style="box-sizing: inherit; padding: 2px 3px 1px; border: 1px solid var(--saf-0); border-radius: 3px; background-color: rgba(var(--sk_foreground_min,29,28,29),0.04); color: rgb(224, 30, 90); --saf-0:rgba(var(--sk_foreground_low,29,28,29),0.13); font-size: 12px; line-height: 1.50001; font-variant-ligatures: none; white-space: pre-wrap; overflow-wrap: break-word; word-break: normal; tab-size: 4; font-family: Monaco, Menlo, Consolas, "Courier New", monospace !important; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">BigDecimal <span style="-webkit-text-stroke-width:0px; background-color:rgb(255, 255, 255); color:rgb(29, 28, 29); display:inline !important; float:none; font-family:slack-lato,applelogo,sans-serif; font-size:15px; font-style:normal; font-variant-caps:normal; font-variant-ligatures:common-ligatures; font-weight:400; letter-spacing:normal; orphans:2; text-align:left; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; white-space:normal; widows:2; word-spacing:0px"> ，不要用 <span style="-webkit-text-stroke-width:0px; background-color:rgba(29, 28, 29, 0.04); color:rgb(224, 30, 90); display:inline !important; float:none; font-family:monaco,menlo,consolas,courier new,monospace; font-size:12px; font-style:normal; font-variant-caps:normal; font-variant-ligatures:none; font-weight:400; letter-spacing:normal; orphans:2; text-align:left; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; white-space:pre-wrap; widows:2; word-spacing:0px">float 或 <code class="c-mrkdwn__code" data-stringify-type="code" style="box-sizing: inherit; padding: 2px 3px 1px; border: 1px solid var(--saf-0); border-radius: 3px; background-color: rgba(var(--sk_foreground_min,29,28,29),0.04); color: rgb(224, 30, 90); --saf-0:rgba(var(--sk_foreground_low,29,28,29),0.13); font-size: 12px; line-height: 1.50001; font-variant-ligatures: none; white-space: pre-wrap; overflow-wrap: break-word; word-break: normal; tab-size: 4; font-family: Monaco, Menlo, Consolas, "Courier New", monospace !important; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">double <span style="-webkit-text-stroke-width:0px; background-color:rgb(255, 255, 255); color:rgb(29, 28, 29); display:inline !important; float:none; font-family:slack-lato,applelogo,sans-serif; font-size:15px; font-style:normal; font-variant-caps:normal; font-variant-ligatures:common-ligatures; font-weight:400; letter-spacing:normal; orphans:2; text-align:left; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; white-space:normal; widows:2; word-spacing:0px">

https://en.wikipedia.org/wiki/Floating-point_arithmetic#Accuracy_problems

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[Java]浮點數的精確度問題

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