Fix memory prefix function values

Author: jscheiny

src/unit/memory.ts

@@ -9,8 +9,8 @@ export const bytes: Memory = Measure.of(8, bits, "B");
 export const kibi: PrefixFn = Measure.prefix("Ki", 1 << 10);
 export const mebi = Measure.prefix("Mi", 1 << 20);
 export const gibi = Measure.prefix("Gi", 1 << 30);
-export const tebi = Measure.prefix("Ti", 1 << 40);
-export const pibi = Measure.prefix("Pi", 1 << 50);
-export const exbi = Measure.prefix("Ei", 1 << 60);
-export const zebi = Measure.prefix("Zi", 1 << 70);
-export const yobi = Measure.prefix("Yi", 1 << 80);
+export const tebi = Measure.prefix("Ti", Math.pow(2, 40));
+export const pibi = Measure.prefix("Pi", Math.pow(2, 50));
+export const exbi = Measure.prefix("Ei", Math.pow(2, 60));
+export const zebi = Measure.prefix("Zi", Math.pow(2, 70));
+export const yobi = Measure.prefix("Yi", Math.pow(2, 80));