修复浮点数计算精度问题

mes-ui/mes-ui-admin-vue3/src/views/heli/partpurchasecheck/print.vue

@@ -88,6 +88,38 @@
 <script setup lang="ts">
 import { ref, computed } from 'vue'
 import dayjs from 'dayjs'
+// 精确浮点数加法函数
+const floatAdd = (a, b) => {
+  var c, d, e;
+  if (undefined === a || null === a || "" === a || isNaN(a)) { a = 0; }
+  if (undefined === b || null === b || "" === b || isNaN(b)) { b = 0; }
+  try {
+    c = a.toString().split(".")[1].length;
+  } catch (f) {
+    c = 0;
+  }
+  try {
+    d = b.toString().split(".")[1].length;
+  } catch (f) {
+    d = 0;
+  }
+  e = Math.pow(10, Math.max(c, d));
+  return (floatMul(a, e) + floatMul(b, e)) / e;
+};
+
+// 精确浮点数乘法函数
+const floatMul = (a, b) => {
+  var c = 0,
+    d = a.toString(),
+    e = b.toString();
+  try {
+    c += d.split(".")[1].length;
+  } catch (f) {}
+  try {
+    c += e.split(".")[1].length;
+  } catch (f) {}
+  return Number(d.replace(".", "")) * Number(e.replace(".", "")) / Math.pow(10, c);
+}
 
 const dialogVisible = ref(false)
 const rows = ref<Record<string, any>[]>([])
@@ -95,12 +127,19 @@ const rows = ref<Record<string, any>[]>([])
 const nowDate = dayjs().format('YYYY-MM-DD')
 const duEmpName = computed(() => (rows.value[0] ? rows.value[0]['合立经手人'] ?? '' : ''))
 
-const sumQuantity = computed(() =>
-  rows.value.reduce((acc, cur) => acc + Number(cur['数量'] || 0), 0)
-)
-const sumTotal = computed(() =>
-  rows.value.reduce((acc, cur) => acc + Number(cur['总价格'] || 0), 0)
-)
+// 计算总数量
+const sumQuantity = computed(() => {
+  return rows.value.reduce((acc, cur) => {
+    return floatAdd(acc, Number(cur['数量']) || 0)
+  }, 0)
+})
+
+// 计算总价格
+const sumTotal = computed(() => {
+  return rows.value.reduce((acc, cur) => {
+    return floatAdd(acc, Number(cur['总价格']) || 0)
+  }, 0)
+})
 
 const fmtDate = (v: any) => (v ? dayjs(v).format('YYYY-MM-DD') : '')