const std = @import("../std.zig");
const math = std.math;
const expect = std.testing.expect;
pub fn isFinite(x: anytype) bool {
const T = @TypeOf(x);
const TBits = std.meta.Int(.unsigned, @typeInfo(T).Float.bits);
const remove_sign = ~@as(TBits, 0) >> 1;
return @bitCast(TBits, x) & remove_sign < @bitCast(TBits, math.inf(T));
}
test "math.isFinite" {
inline for ([_]type{ f16, f32, f64, f80, f128 }) |T| {
try expect(isFinite(@as(T, 1.0)));
try expect(isFinite(-@as(T, 1.0)));
try expect(isFinite(@as(T, 0.0)));
try expect(isFinite(@as(T, -0.0)));
try expect(isFinite(math.floatTrueMin(T)));
try expect(isFinite(math.floatMin(T)));
try expect(isFinite(math.floatMax(T)));
try expect(!isFinite(math.inf(T)));
try expect(!isFinite(-math.inf(T)));
try expect(!isFinite(math.nan(T)));
try expect(!isFinite(-math.nan(T)));
}
}