Troubles with vectors

[tensorush]

Bit shift operations, same as here:

Cannot cast `usize` to `i64` in `std.math.pow`

In a << b, b must be comptime-known or have a type with log2 number of bits as a, see Bit Shift Left in langref’s table of operators. Here’s a working case: const std = @import("std"); fn foo(input: []const u8) void { var acc: u64 = 0; for (0..4) |pow| { acc += @as(u64, input[pow + 1]) << @as(u6, @truncate(std.math.pow(usize, 8, pow))); } } pub fn main() !void { const input: []const u8 = "\xFF\xFF\xFF\xFF\xFF"; foo(input); }