From f5c4671bfbad96bf346bd7e9a21fc4317b4959df Mon Sep 17 00:00:00 2001
From: Indrajith K L
Date: Sat, 3 Dec 2022 17:00:20 +0530
Subject: Adds most of the tools

---
 v_windows/v/vlib/hash/fnv1a/fnv1a.v      | 44 ++++++++++++++++++++++++++++++++
 v_windows/v/vlib/hash/fnv1a/fnv1a_test.v | 12 +++++++++
 2 files changed, 56 insertions(+)
 create mode 100644 v_windows/v/vlib/hash/fnv1a/fnv1a.v
 create mode 100644 v_windows/v/vlib/hash/fnv1a/fnv1a_test.v

(limited to 'v_windows/v/vlib/hash/fnv1a')

diff --git a/v_windows/v/vlib/hash/fnv1a/fnv1a.v b/v_windows/v/vlib/hash/fnv1a/fnv1a.v
new file mode 100644
index 0000000..275c8a2
--- /dev/null
+++ b/v_windows/v/vlib/hash/fnv1a/fnv1a.v
@@ -0,0 +1,44 @@
+module fnv1a
+
+const (
+	fnv64_prime        = u64(1099511628211)
+	fnv64_offset_basis = u64(14695981039346656037)
+	fnv32_offset_basis = u32(2166136261)
+	fnv32_prime        = u32(16777619)
+)
+
+[inline]
+pub fn sum32_string(data string) u32 {
+	mut hash := fnv1a.fnv32_offset_basis
+	for i in 0 .. data.len {
+		hash = (hash ^ u32(data[i])) * fnv1a.fnv32_prime
+	}
+	return hash
+}
+
+[inline]
+pub fn sum32(data []byte) u32 {
+	mut hash := fnv1a.fnv32_offset_basis
+	for i in 0 .. data.len {
+		hash = (hash ^ u32(data[i])) * fnv1a.fnv32_prime
+	}
+	return hash
+}
+
+[inline]
+pub fn sum64_string(data string) u64 {
+	mut hash := fnv1a.fnv64_offset_basis
+	for i in 0 .. data.len {
+		hash = (hash ^ u64(data[i])) * fnv1a.fnv64_prime
+	}
+	return hash
+}
+
+[inline]
+pub fn sum64(data []byte) u64 {
+	mut hash := fnv1a.fnv64_offset_basis
+	for i in 0 .. data.len {
+		hash = (hash ^ u64(data[i])) * fnv1a.fnv64_prime
+	}
+	return hash
+}
diff --git a/v_windows/v/vlib/hash/fnv1a/fnv1a_test.v b/v_windows/v/vlib/hash/fnv1a/fnv1a_test.v
new file mode 100644
index 0000000..f775ab1
--- /dev/null
+++ b/v_windows/v/vlib/hash/fnv1a/fnv1a_test.v
@@ -0,0 +1,12 @@
+import hash.fnv1a
+
+fn test_fnv1a() {
+	$if windows {
+		return
+	}
+	a := 'apple'
+	b := fnv1a.sum64_string(a)
+	c := fnv1a.sum64(a.bytes())
+	assert b.hex() == 'f74a62a458befdbf'
+	assert c.hex() == 'f74a62a458befdbf'
+}
-- 
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