authorgravatar for thejoshwolfe@gmail.comJosh Wolfe <thejoshwolfe@gmail.com> 2018-11-14 21:40:53-05:00
committergravatar for thejoshwolfe@gmail.comJosh Wolfe <thejoshwolfe@gmail.com> 2018-11-14 21:40:53-05:00
log65cddc5a1955303481252768b72c2f68200be359
tree35e1484fff3bc2d10613ed0322fce9fa3f26139f
parent8008ae470e2ad4c185b239b436fb2396f9499ca1

test for readIntBE/LE

1 files changed, 20 insertions(+), 0 deletions(-)

std/mem.zig+20
...@@ -468,6 +468,26 @@ pub fn readIntLE(comptime T: type, bytes: []const u8) T {...@@ -468,6 +468,26 @@ pub fn readIntLE(comptime T: type, bytes: []const u8) T {
468 return result;468 return result;
469}469}
470470
471test "readIntBE/LE" {
472 assert(readIntBE(u0, []u8{}) == 0x0);
473 assert(readIntLE(u0, []u8{}) == 0x0);
474
475 assert(readIntBE(u8, []u8{0x32}) == 0x32);
476 assert(readIntLE(u8, []u8{0x12}) == 0x12);
477
478 assert(readIntBE(u16, []u8{0x12, 0x34}) == 0x1234);
479 assert(readIntLE(u16, []u8{0x12, 0x34}) == 0x3412);
480
481 assert(readIntBE(u72, []u8{ 0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xf0, 0x24 }) == 0x123456789abcdef024);
482 assert(readIntLE(u72, []u8{ 0xec, 0x10, 0x32, 0x54, 0x76, 0x98, 0xba, 0xdc, 0xfe }) == 0xfedcba9876543210ec);
483
484 assert(readIntBE(i8, []u8{0xff}) == -1);
485 assert(readIntLE(i8, []u8{0xfe}) == -2);
486
487 assert(readIntBE(i16, []u8{0xff, 0xfd}) == -3);
488 assert(readIntLE(i16, []u8{0xfc, 0xff}) == -4);
489}
490
471/// Writes an integer to memory with size equal to bytes.len. Pads with zeroes491/// Writes an integer to memory with size equal to bytes.len. Pads with zeroes
472/// to fill the entire buffer provided.492/// to fill the entire buffer provided.
473/// value must be an integer.493/// value must be an integer.