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Add single DIGIT addition.

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This commit is contained in:
Jeroen van Rijn
2021-08-11 20:59:50 +02:00
parent c5cbd3260a
commit c2c07f07db
3 changed files with 186 additions and 39 deletions
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core/math/bigint/example.odin
+24 -5
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@@ -13,24 +13,43 @@ package bigint
import "core:fmt"
import "core:mem"
print_int :: proc(a: ^Int, print_raw := false) -> string {
if print_raw {
return fmt.tprintf("%v", a);
}
sign := "-" if a.sign == .Negative else "";
if a.used <= 2 {
v := _WORD(a.digit[1]) << _DIGIT_BITS + _WORD(a.digit[0]);
return fmt.tprintf("%v%v", sign, v);
} else {
return fmt.tprintf("[%2d/%2d] %v%v", a.used, a.allocated, sign, a.digit[:a.used]);
}
}
demo :: proc() {
a, b, c: ^Int;
err: Error;
a, err = init(21);
defer destroy(a);
fmt.printf("a: %v, err: %v\n\n", a, err);
fmt.printf("a: %v, err: %v\n\n", print_int(a), err);
b, err = init(-21);
b, err = init(21);
defer destroy(b);
fmt.printf("b: %v, err: %v\n\n", b, err);
fmt.printf("b: %v, err: %v\n\n", print_int(b), err);
c, err = init();
defer destroy(c);
fmt.printf("c: %v\n", print_int(c, true));
err = sub(c, a, b);
fmt.printf("c: %v, err: %v\n\n", c, err);
fmt.println("=== Add ===");
err = add(c, a, DIGIT(42));
// err = add(c, a, b);
fmt.printf("Error: %v\n", err);
fmt.printf("a: %v\n", print_int(a));
fmt.printf("b: %v\n", print_int(b));
fmt.printf("c: %v\n", print_int(c));
}
main :: proc() {