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/math/big/big.js.v | 198 +++++++++++++++++++++++++++++++++++++
 1 file changed, 198 insertions(+)
 create mode 100644 v_windows/v/vlib/math/big/big.js.v

(limited to 'v_windows/v/vlib/math/big/big.js.v')

diff --git a/v_windows/v/vlib/math/big/big.js.v b/v_windows/v/vlib/math/big/big.js.v
new file mode 100644
index 0000000..0ed469c
--- /dev/null
+++ b/v_windows/v/vlib/math/big/big.js.v
@@ -0,0 +1,198 @@
+module big
+
+struct JS.BigInt {}
+
+#const jsNumber = Number;
+
+pub struct Number {
+}
+
+pub fn new() Number {
+	return Number{}
+}
+
+pub fn from_int(i int) Number {
+	n := Number{}
+	#n.value = BigInt(+i)
+
+	return n
+}
+
+pub fn from_u64(u u64) Number {
+	n := Number{}
+	#n.value = BigInt(u.val)
+
+	return n
+}
+
+pub fn from_hex_string(input string) Number {
+	n := Number{}
+	#n.value = BigInt(input.val)
+
+	return n
+}
+
+pub fn from_string(input string) Number {
+	n := Number{}
+	#n.value = BigInt(input.val)
+
+	return n
+}
+
+pub fn (n &Number) int() int {
+	r := 0
+	#r.val = jsNumber(n.val.value)
+
+	return r
+}
+
+pub fn (n &Number) str() string {
+	s := ''
+	#s.str = n.val.value + ""
+
+	return s
+}
+
+pub fn (a &Number) + (b &Number) Number {
+	c := Number{}
+	#c.value = a.val.value + b.val.value
+
+	return c
+}
+
+pub fn (a &Number) - (b &Number) Number {
+	c := Number{}
+	#c.value = a.val.value - b.val.value
+
+	return c
+}
+
+pub fn (a &Number) / (b &Number) Number {
+	c := Number{}
+	#c.value = a.val.value / b.val.value
+
+	return c
+}
+
+pub fn (a &Number) * (b &Number) Number {
+	c := Number{}
+	#c.value = a.val.value * b.val.value
+
+	return c
+}
+
+/*
+pub fn (a &Number) % (b &Number) Number {
+	c := Number{}
+	# c.value = a.val.value % b.val.value
+	return c
+}*/
+
+pub fn divmod(a &Number, b &Number) (Number, Number) {
+	c := Number{}
+	d := Number{}
+	#c.value = a.val.value / b.val.value
+	#d.value = a.val.value % b.val.value
+
+	return c, d
+}
+
+pub fn cmp(a &Number, b &Number) int {
+	res := 0
+
+	#if (a.val.value < b.val.value) res.val = -1
+	#else if (a.val.value > b.val.value) res.val = 1
+	#else res.val = 0
+
+	return res
+}
+
+pub fn (a &Number) is_zero() bool {
+	res := false
+	#res.val = a.val.value == BigInt(0)
+
+	return res
+}
+
+pub fn (mut a Number) inc() {
+	#a.val.value = a.val.value + BigInt(1)
+}
+
+pub fn (mut a Number) dec() {
+	#a.val.value = a.val.value - BigInt(1)
+}
+
+pub fn (a &Number) isqrt() Number {
+	b := Number{}
+	#let x0 = a.val.value >> 1n
+	#if (x0) {
+	#let x1 = (x0 + a.val.value / x0) >> 1n
+	#while (x1 < x0) {
+	#x0 = x1
+	#x1 = (x0 + a.val.value / x0) >> 1n
+	#}
+	#b.value = x0
+	#} else { b.value = a.val.value; }
+
+	return b
+}
+
+pub fn b_and(a &Number, b &Number) Number {
+	c := Number{}
+	#c.value = a.val.value & b.val.value
+
+	return c
+}
+
+pub fn b_or(a &Number, b &Number) Number {
+	c := Number{}
+	#c.value = a.val.value | b.val.value
+
+	return c
+}
+
+pub fn b_xor(a &Number, b &Number) Number {
+	c := Number{}
+	#c.value = a.val.value ^ b.val.value
+
+	return c
+}
+
+pub fn (a &Number) lshift(nbits int) Number {
+	c := Number{}
+	#c.value = a.val.value << BigInt(+nbits)
+
+	return c
+}
+
+pub fn (a &Number) rshift(nbits int) Number {
+	c := Number{}
+	#c.value = a.val.value << BigInt(+nbits)
+
+	return c
+}
+
+pub fn (a &Number) clone() Number {
+	b := Number{}
+	#b.value = a.val.value
+
+	return b
+}
+
+pub fn factorial(nn &Number) Number {
+	mut n := nn.clone()
+	mut a := nn.clone()
+	n.dec()
+	mut i := 1
+	for !n.is_zero() {
+		res := a * n
+		n.dec()
+		a = res
+		i++
+	}
+	return a
+}
+
+pub fn fact(n int) Number {
+	return factorial(from_int(n))
+}
-- 
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