WIP

jessealama · Dec 4, 2023 · 3d89efc · 3d89efc
1 parent cfc7b71
commit 3d89efc
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Showing 4 changed files with 357 additions and 389 deletions.
diff --git a/src/common.mts b/src/common.mts
@@ -32,4 +32,36 @@ export function countSignificantDigits(s: string): number {
 }
 
 export type Digit = -1 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9; // -1 signals that we're moving from the integer part to the decimal part of a decimal number
+export type DigitAsString =
+    | "0"
+    | "1"
+    | "2"
+    | "3"
+    | "4"
+    | "5"
+    | "6"
+    | "7"
+    | "8"
+    | "9";
 export type DigitOrTen = Digit | 10;
+
+export type RoundingMode =
+    | "ceil"
+    | "floor"
+    | "expand"
+    | "trunc"
+    | "halfEven"
+    | "halfExpand"
+    | "halfCeil"
+    | "halfFloor"
+    | "halfTrunc";
+
+export const ROUNDING_MODE_CEILING: RoundingMode = "ceil";
+export const ROUNDING_MODE_FLOOR: RoundingMode = "floor";
+export const ROUNDING_MODE_EXPAND: RoundingMode = "expand";
+export const ROUNDING_MODE_TRUNCATE: RoundingMode = "trunc";
+export const ROUNDING_MODE_HALF_EVEN: RoundingMode = "halfEven";
+export const ROUNDING_MODE_HALF_EXPAND: RoundingMode = "halfExpand";
+export const ROUNDING_MODE_HALF_CEILING: RoundingMode = "halfCeil";
+export const ROUNDING_MODE_HALF_FLOOR: RoundingMode = "halfFloor";
+export const ROUNDING_MODE_HALF_TRUNCATE: RoundingMode = "halfTrunc";