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big: Add sqrt.

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This commit is contained in:
Jeroen van Rijn
2021-08-11 20:59:51 +02:00
parent 9c2468ecf7
commit 2aae1016ab
4 changed files with 77 additions and 37 deletions
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core/math/big/example.odin
+13 -36
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@@ -51,15 +51,7 @@ print :: proc(name: string, a: ^Int, base := i8(10)) {
}
num_threads :: 16;
global_traces_indexes := [num_threads]u16{};
@thread_local local_traces_index : ^u16;
init_thread_tracing :: proc(thread_id: u8) {
fmt.printf("%p\n", &global_traces_indexes[thread_id]);
fmt.printf("%p\n", local_traces_index);
}
@thread_local string_buffer: [1024]u8;
demo :: proc() {
err: Error;
@@ -67,34 +59,19 @@ 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, 2);
err = set (denominator, 1);
err = set (quotient, u128(1 << 120));
err = zero(remainder);
err = pow(remainder, numerator, 120);
if err != .None {
fmt.printf("Error: %v\n", err);
} else {
print("numerator ", numerator, 10);
print("denominator", denominator, 10);
print("quotient ", quotient, 10);
print("remainder ", remainder, 10);
}
if c, _ := cmp(quotient, remainder); c == 0 {
fmt.println("c == r");
} else {
fmt.println("c != r");
}
// string_buffer := make([]u8, 1024);
// defer delete(string_buffer);
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);
}
err = set (numerator, 1024);
err = int_sqrt(destination, numerator);
fmt.printf("int_sqrt returned: %v\n", err);
print("destination", destination);
// print("source ", source);
// print("quotient ", quotient);
// print("remainder ", remainder);
print("numerator ", numerator);
// print("denominator", denominator);
}
main :: proc() {