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Add static Decimal.compare method

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This commit is contained in:
willclarktech 2020-06-10 15:33:42 +01:00
parent d6d6d3fee5
commit 9ac1994cb6
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2 changed files with 11 additions and 11 deletions
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20
packages/math/src/decimal.ts
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@ -64,6 +64,11 @@ export class Decimal {
}
}
public static compare(a: Decimal, b: Decimal): number {
if (a.fractionalDigits !== b.fractionalDigits) throw new Error("Fractional digits do not match");
return a.data.atomics.cmp(new BN(b.atomics));
}
public get atomics(): string {
return this.data.atomics.toString();
}
@ -119,28 +124,23 @@ export class Decimal {
return new Decimal(sum.toString(), this.fractionalDigits);
}
public compare(b: Decimal): number {
if (this.fractionalDigits !== b.fractionalDigits) throw new Error("Fractional digits do not match");
return this.data.atomics.cmp(new BN(b.atomics));
}
public equals(b: Decimal): boolean {
return this.compare(b) === 0;
return Decimal.compare(this, b) === 0;
}
public isLessThan(b: Decimal): boolean {
return this.compare(b) < 0;
return Decimal.compare(this, b) < 0;
}
public isLessThanOrEqual(b: Decimal): boolean {
return this.compare(b) <= 0;
return Decimal.compare(this, b) <= 0;
}
public isGreaterThan(b: Decimal): boolean {
return this.compare(b) > 0;
return Decimal.compare(this, b) > 0;
}
public isGreaterThanOrEqual(b: Decimal): boolean {
return this.compare(b) >= 0;
return Decimal.compare(this, b) >= 0;
}
}

2
packages/math/types/decimal.d.ts vendored
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@ -7,6 +7,7 @@ export declare class Decimal {
static fromUserInput(input: string, fractionalDigits: number): Decimal;
static fromAtomics(atomics: string, fractionalDigits: number): Decimal;
private static verifyFractionalDigits;
static compare(a: Decimal, b: Decimal): number;
get atomics(): string;
get fractionalDigits(): number;
private readonly data;
@ -23,7 +24,6 @@ export declare class Decimal {
* Both values need to have the same fractional digits.
*/
plus(b: Decimal): Decimal;
compare(b: Decimal): number;
equals(b: Decimal): boolean;
isLessThan(b: Decimal): boolean;
isLessThanOrEqual(b: Decimal): boolean;