From 0ea5f43a04eb260eb45c1c4a6a9de0ae0f277418 Mon Sep 17 00:00:00 2001
From: webfansplz <308241863@qq.com>
Date: Sun, 10 Jul 2022 14:36:36 +0800
Subject: [PATCH] feat(useCeil): new function

---
 packages/math/useCeil/index.md      | 16 ++++++++++++++++
 packages/math/useCeil/index.test.ts | 15 +++++++++++++++
 packages/math/useCeil/index.ts      | 15 +++++++++++++++
 3 files changed, 46 insertions(+)
 create mode 100644 packages/math/useCeil/index.md
 create mode 100644 packages/math/useCeil/index.test.ts
 create mode 100644 packages/math/useCeil/index.ts

diff --git a/packages/math/useCeil/index.md b/packages/math/useCeil/index.md
new file mode 100644
index 00000000000..ec1d51b2a05
--- /dev/null
+++ b/packages/math/useCeil/index.md
@@ -0,0 +1,16 @@
+---
+category: '@Math'
+---
+
+# useCeil
+
+Reactively Math.ceil(value).
+
+## Usage
+
+```ts
+import { useCeil } from '@vueuse/math'
+
+const value = ref(0.95)
+const result = useCeil(value)
+```
diff --git a/packages/math/useCeil/index.test.ts b/packages/math/useCeil/index.test.ts
new file mode 100644
index 00000000000..50c89fa7a94
--- /dev/null
+++ b/packages/math/useCeil/index.test.ts
@@ -0,0 +1,15 @@
+import { ref } from 'vue-demi'
+import { useCeil } from '.'
+
+describe('useCeil', () => {
+  it('should be defined', () => {
+    expect(useCeil).toBeDefined()
+  })
+  it('should work', () => {
+    const base = ref(0.95)
+    const result = useCeil(base)
+    expect(result.value).toBe(1)
+    base.value = -7.004
+    expect(result.value).toBe(-7)
+  })
+})
diff --git a/packages/math/useCeil/index.ts b/packages/math/useCeil/index.ts
new file mode 100644
index 00000000000..dbdad1d4539
--- /dev/null
+++ b/packages/math/useCeil/index.ts
@@ -0,0 +1,15 @@
+import type { ComputedRef } from 'vue-demi'
+import { computed } from 'vue-demi'
+import type { MaybeComputedRef } from '@vueuse/shared'
+import { resolveUnref } from '@vueuse/shared'
+
+/**
+ * Reactively Math.ceil(value).
+ *
+ * @see https://vueuse.org/useCeil
+ * @param base
+ * @param exponent
+ */
+export function useCeil(value: MaybeComputedRef<number>): ComputedRef<number> {
+  return computed<number>(() => Math.ceil(resolveUnref(value)))
+}