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big: Add atoi.

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This commit is contained in:
Jeroen van Rijn
2021-08-11 20:59:51 +02:00
parent 0a431eef19
commit 9c2468ecf7
3 changed files with 122 additions and 23 deletions
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core/math/big/example.odin
+20 -6
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@@ -40,7 +40,7 @@ _SQR_TOOM_CUTOFF,
);
}
print :: proc(name: string, a: ^Int, base := i8(16)) {
print :: proc(name: string, a: ^Int, base := i8(10)) {
as, err := itoa(a, base);
defer delete(as);
cb, _ := count_bits(a);
@@ -67,12 +67,11 @@ demo :: proc() {
destination, source, quotient, remainder, numerator, denominator := &Int{}, &Int{}, &Int{}, &Int{}, &Int{}, &Int{};
defer destroy(destination, source, quotient, remainder, numerator, denominator);
err = set (numerator, 3);
err = set (denominator, 2);
err = set (quotient, 5);
err = set (numerator, 2);
err = set (denominator, 1);
err = set (quotient, u128(1 << 120));
err = zero(remainder);
err = mulmod(remainder, numerator, denominator, quotient);
err = pow(remainder, numerator, 120);
if err != .None {
fmt.printf("Error: %v\n", err);
} else {
@@ -81,6 +80,21 @@ demo :: proc() {
print("quotient ", quotient, 10);
print("remainder ", remainder, 10);
}
if c, _ := cmp(quotient, remainder); c == 0 {
fmt.println("c == r");
} else {
fmt.println("c != r");
}
foozle := "-1329227995784915872903807060280344576";
err = atoi(destination, foozle, 10);
if err != .None {
fmt.printf("Error %v while parsing `%v`", err, foozle);
} else {
print("destination", destination);
err = add(remainder, remainder, destination);
print("remainder + destination", remainder);
}
}
main :: proc() {