diff options
Diffstat (limited to '')
| -rw-r--r-- | src/bun.js/bindings/bindings.zig | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/src/bun.js/bindings/bindings.zig b/src/bun.js/bindings/bindings.zig index 6976694ea..ccf446d2d 100644 --- a/src/bun.js/bindings/bindings.zig +++ b/src/bun.js/bindings/bindings.zig @@ -2364,7 +2364,7 @@ pub const JSValue = enum(JSValueReprInt) { } if (this.isNumber()) { - return @truncate(i32, @floatToInt(i64, this.asDouble())); + return @truncate(i32, this.coerceDoubleTruncatingIntoInt64()); } return this.coerceToInt32(globalThis); @@ -2660,13 +2660,33 @@ pub const JSValue = enum(JSValueReprInt) { return jsNumberFromDouble(@intToFloat(f64, @intCast(i52, @truncate(u51, i)))); } + pub fn coerceDoubleTruncatingIntoInt64(this: JSValue) i64 { + const double_value = this.asDouble(); + + if (std.math.isNan(double_value)) + return std.math.minInt(i64); + + // coerce NaN or Infinity to either -maxInt or maxInt + if (std.math.isInf(double_value)) { + return if (double_value < 0) @as(i64, std.math.minInt(i64)) else @as(i64, std.math.maxInt(i64)); + } + + return @floatToInt( + i64, + double_value, + ); + } + + /// Decimal values are truncated without rounding. + /// `-Infinity` and `NaN` coerce to -minInt(64) + /// `Infinity` coerces to maxInt(64) pub fn toInt64(this: JSValue) i64 { if (this.isInt32()) { return this.asInt32(); } if (this.isNumber()) { - return @floatToInt(i64, this.asDouble()); + return this.coerceDoubleTruncatingIntoInt64(); } return cppFn("toInt64", .{this}); |