Safe implementations of write_uint and write_uint128

[fintelia]

No description provided.

[BurntSushi]

I think this probably LGTM, but the benchmarks should be compared before/after. Do you want to do that?

[fintelia]

Added some benchmarks in #206. I didn't compare super closely, but the performance seemed to be in the same range.

[BurntSushi]

Can you share the benchmark results when you get a chance? Thanks.

[fintelia]

Here's the results if the byte count isn't hard-coded (by using bb($bytes) in the benchmarks).

On the master branch:

test uint_1::write_big_endian        ... bench:     107,573 ns/iter (+/- 68)
test uint_1::write_little_endian     ... bench:     107,575 ns/iter (+/- 181)
test uint_1::write_native_endian     ... bench:     107,611 ns/iter (+/- 456)
test uint_2::write_big_endian        ... bench:     279,904 ns/iter (+/- 1,708)
test uint_2::write_little_endian     ... bench:     280,058 ns/iter (+/- 1,403)
test uint_2::write_native_endian     ... bench:     279,756 ns/iter (+/- 586)
test uint_3::write_big_endian        ... bench:     279,714 ns/iter (+/- 2,018)
test uint_3::write_little_endian     ... bench:     279,711 ns/iter (+/- 637)
test uint_3::write_native_endian     ... bench:     279,710 ns/iter (+/- 312)
test uint_4::write_big_endian        ... bench:     258,275 ns/iter (+/- 488)
test uint_4::write_little_endian     ... bench:     258,324 ns/iter (+/- 3,371)
test uint_4::write_native_endian     ... bench:     258,272 ns/iter (+/- 954)
test uint_5::write_big_endian        ... bench:     258,216 ns/iter (+/- 745)
test uint_5::write_little_endian     ... bench:     258,348 ns/iter (+/- 664)
test uint_5::write_native_endian     ... bench:     258,290 ns/iter (+/- 657)
test uint_6::write_big_endian        ... bench:     258,355 ns/iter (+/- 2,584)
test uint_6::write_little_endian     ... bench:     258,248 ns/iter (+/- 1,417)
test uint_6::write_native_endian     ... bench:     258,294 ns/iter (+/- 4,444)
test uint_7::write_big_endian        ... bench:     258,247 ns/iter (+/- 12,597)
test uint_7::write_little_endian     ... bench:     258,232 ns/iter (+/- 1,128)
test uint_7::write_native_endian     ... bench:     258,219 ns/iter (+/- 27,794)
test uint_8::write_big_endian        ... bench:     236,703 ns/iter (+/- 569)
test uint_8::write_little_endian     ... bench:     236,704 ns/iter (+/- 45,750)
test uint_8::write_native_endian     ... bench:     236,678 ns/iter (+/- 307)

test uint128_10::write_big_endian    ... bench:     430,569 ns/iter (+/- 1,971)
test uint128_10::write_little_endian ... bench:     430,354 ns/iter (+/- 699)
test uint128_10::write_native_endian ... bench:     430,351 ns/iter (+/- 329)
test uint128_11::write_big_endian    ... bench:     430,341 ns/iter (+/- 275)
test uint128_11::write_little_endian ... bench:     430,371 ns/iter (+/- 565)
test uint128_11::write_native_endian ... bench:     430,364 ns/iter (+/- 315)
test uint128_12::write_big_endian    ... bench:     430,338 ns/iter (+/- 636)
test uint128_12::write_little_endian ... bench:     430,527 ns/iter (+/- 540)
test uint128_12::write_native_endian ... bench:     430,344 ns/iter (+/- 248)
test uint128_13::write_big_endian    ... bench:     430,347 ns/iter (+/- 252)
test uint128_13::write_little_endian ... bench:     430,378 ns/iter (+/- 126)
test uint128_13::write_native_endian ... bench:     430,560 ns/iter (+/- 622)
test uint128_14::write_big_endian    ... bench:     430,341 ns/iter (+/- 131)
test uint128_14::write_little_endian ... bench:     430,361 ns/iter (+/- 350)
test uint128_14::write_native_endian ... bench:     430,341 ns/iter (+/- 234)
test uint128_15::write_big_endian    ... bench:     430,335 ns/iter (+/- 236)
test uint128_15::write_little_endian ... bench:     430,362 ns/iter (+/- 252)
test uint128_15::write_native_endian ... bench:     430,359 ns/iter (+/- 279)
test uint128_16::write_big_endian    ... bench:     473,404 ns/iter (+/- 373)
test uint128_16::write_little_endian ... bench:     473,361 ns/iter (+/- 308)
test uint128_16::write_native_endian ... bench:     473,344 ns/iter (+/- 249)
test uint128_1::write_big_endian     ... bench:     107,634 ns/iter (+/- 674)
test uint128_1::write_little_endian  ... bench:     107,630 ns/iter (+/- 736)
test uint128_1::write_native_endian  ... bench:     107,653 ns/iter (+/- 784)
test uint128_2::write_big_endian     ... bench:     279,754 ns/iter (+/- 232)
test uint128_2::write_little_endian  ... bench:     279,787 ns/iter (+/- 300)
test uint128_2::write_native_endian  ... bench:     279,791 ns/iter (+/- 286)
test uint128_3::write_big_endian     ... bench:     236,958 ns/iter (+/- 1,755)
test uint128_3::write_little_endian  ... bench:     279,802 ns/iter (+/- 1,714)
test uint128_3::write_native_endian  ... bench:     279,804 ns/iter (+/- 1,639)
test uint128_4::write_big_endian     ... bench:     258,312 ns/iter (+/- 1,734)
test uint128_4::write_little_endian  ... bench:     258,325 ns/iter (+/- 2,255)
test uint128_4::write_native_endian  ... bench:     258,324 ns/iter (+/- 2,223)
test uint128_5::write_big_endian     ... bench:     258,308 ns/iter (+/- 998)
test uint128_5::write_little_endian  ... bench:     258,306 ns/iter (+/- 951)
test uint128_5::write_native_endian  ... bench:     258,299 ns/iter (+/- 1,022)
test uint128_6::write_big_endian     ... bench:     279,808 ns/iter (+/- 1,103)
test uint128_6::write_little_endian  ... bench:     258,569 ns/iter (+/- 508)
test uint128_6::write_native_endian  ... bench:     258,438 ns/iter (+/- 266)
test uint128_7::write_big_endian     ... bench:     258,644 ns/iter (+/- 1,030)
test uint128_7::write_little_endian  ... bench:     258,492 ns/iter (+/- 3,014)
test uint128_7::write_native_endian  ... bench:     258,459 ns/iter (+/- 3,799)
test uint128_8::write_big_endian     ... bench:     236,789 ns/iter (+/- 927)
test uint128_8::write_little_endian  ... bench:     236,786 ns/iter (+/- 832)
test uint128_8::write_native_endian  ... bench:     236,726 ns/iter (+/- 1,142)
test uint128_9::write_big_endian     ... bench:     430,485 ns/iter (+/- 1,541)
test uint128_9::write_little_endian  ... bench:     430,462 ns/iter (+/- 162)
test uint128_9::write_native_endian  ... bench:     430,425 ns/iter (+/- 859)

With this PR:

test uint_1::write_big_endian        ... bench:      21,518 ns/iter (+/- 47)
test uint_1::write_little_endian     ... bench:      21,518 ns/iter (+/- 14)
test uint_1::write_native_endian     ... bench:      21,517 ns/iter (+/- 11)
test uint_2::write_big_endian        ... bench:      21,523 ns/iter (+/- 43)
test uint_2::write_little_endian     ... bench:      21,518 ns/iter (+/- 18)
test uint_2::write_native_endian     ... bench:      21,518 ns/iter (+/- 11)
test uint_3::write_big_endian        ... bench:      21,518 ns/iter (+/- 36)
test uint_3::write_little_endian     ... bench:      21,520 ns/iter (+/- 135)
test uint_3::write_native_endian     ... bench:      21,518 ns/iter (+/- 51)
test uint_4::write_big_endian        ... bench:      21,518 ns/iter (+/- 13)
test uint_4::write_little_endian     ... bench:      21,518 ns/iter (+/- 13)
test uint_4::write_native_endian     ... bench:      21,519 ns/iter (+/- 177)
test uint_5::write_big_endian        ... bench:      21,518 ns/iter (+/- 15)
test uint_5::write_little_endian     ... bench:      21,519 ns/iter (+/- 19)
test uint_5::write_native_endian     ... bench:      21,518 ns/iter (+/- 12)
test uint_6::write_big_endian        ... bench:      21,518 ns/iter (+/- 12)
test uint_6::write_little_endian     ... bench:      21,518 ns/iter (+/- 13)
test uint_6::write_native_endian     ... bench:      21,518 ns/iter (+/- 14)
test uint_7::write_big_endian        ... bench:      21,518 ns/iter (+/- 13)
test uint_7::write_little_endian     ... bench:      21,518 ns/iter (+/- 19)
test uint_7::write_native_endian     ... bench:      21,518 ns/iter (+/- 12)
test uint_8::write_big_endian        ... bench:      21,518 ns/iter (+/- 12)
test uint_8::write_little_endian     ... bench:      21,518 ns/iter (+/- 12)
test uint_8::write_native_endian     ... bench:      21,518 ns/iter (+/- 22)

test uint128_10::write_big_endian    ... bench:     430,514 ns/iter (+/- 923)
test uint128_10::write_little_endian ... bench:     430,494 ns/iter (+/- 1,451)
test uint128_10::write_native_endian ... bench:     430,478 ns/iter (+/- 1,344)
test uint128_11::write_big_endian    ... bench:     430,517 ns/iter (+/- 570)
test uint128_11::write_little_endian ... bench:     430,551 ns/iter (+/- 601)
test uint128_11::write_native_endian ... bench:     430,595 ns/iter (+/- 1,627)
test uint128_12::write_big_endian    ... bench:     430,564 ns/iter (+/- 388)
test uint128_12::write_little_endian ... bench:     430,537 ns/iter (+/- 1,407)
test uint128_12::write_native_endian ... bench:     430,382 ns/iter (+/- 1,661)
test uint128_13::write_big_endian    ... bench:     430,968 ns/iter (+/- 5,490)
test uint128_13::write_little_endian ... bench:     430,434 ns/iter (+/- 1,289)
test uint128_13::write_native_endian ... bench:     430,464 ns/iter (+/- 1,850)
test uint128_14::write_big_endian    ... bench:     430,412 ns/iter (+/- 465)
test uint128_14::write_little_endian ... bench:     430,474 ns/iter (+/- 1,471)
test uint128_14::write_native_endian ... bench:     430,452 ns/iter (+/- 304)
test uint128_15::write_big_endian    ... bench:     430,942 ns/iter (+/- 757)
test uint128_15::write_little_endian ... bench:     430,568 ns/iter (+/- 2,904)
test uint128_15::write_native_endian ... bench:     430,442 ns/iter (+/- 360)
test uint128_16::write_big_endian    ... bench:     473,708 ns/iter (+/- 2,612)
test uint128_16::write_little_endian ... bench:     475,082 ns/iter (+/- 3,644)
test uint128_16::write_native_endian ... bench:     473,935 ns/iter (+/- 3,283)
test uint128_1::write_big_endian     ... bench:     107,602 ns/iter (+/- 204)
test uint128_1::write_little_endian  ... bench:     107,602 ns/iter (+/- 75)
test uint128_1::write_native_endian  ... bench:     107,614 ns/iter (+/- 1,337)
test uint128_2::write_big_endian     ... bench:     258,466 ns/iter (+/- 369)
test uint128_2::write_little_endian  ... bench:     279,828 ns/iter (+/- 1,399)
test uint128_2::write_native_endian  ... bench:     279,815 ns/iter (+/- 1,117)
test uint128_3::write_big_endian     ... bench:     258,530 ns/iter (+/- 21,861)
test uint128_3::write_little_endian  ... bench:     280,171 ns/iter (+/- 1,016)
test uint128_3::write_native_endian  ... bench:     280,253 ns/iter (+/- 1,783)
test uint128_4::write_big_endian     ... bench:     258,387 ns/iter (+/- 1,624)
test uint128_4::write_little_endian  ... bench:     258,699 ns/iter (+/- 1,570)
test uint128_4::write_native_endian  ... bench:     258,512 ns/iter (+/- 1,134)
test uint128_5::write_big_endian     ... bench:     258,658 ns/iter (+/- 1,059)
test uint128_5::write_little_endian  ... bench:     258,456 ns/iter (+/- 987)
test uint128_5::write_native_endian  ... bench:     258,645 ns/iter (+/- 1,481)
test uint128_6::write_big_endian     ... bench:     279,821 ns/iter (+/- 1,552)
test uint128_6::write_little_endian  ... bench:     258,402 ns/iter (+/- 19,638)
test uint128_6::write_native_endian  ... bench:     238,185 ns/iter (+/- 23,495)
test uint128_7::write_big_endian     ... bench:     259,410 ns/iter (+/- 22,949)
test uint128_7::write_little_endian  ... bench:     257,303 ns/iter (+/- 22,307)
test uint128_7::write_native_endian  ... bench:     258,294 ns/iter (+/- 1,672)
test uint128_8::write_big_endian     ... bench:     236,797 ns/iter (+/- 2,352)
test uint128_8::write_little_endian  ... bench:     236,786 ns/iter (+/- 1,905)
test uint128_8::write_native_endian  ... bench:     236,738 ns/iter (+/- 1,616)
test uint128_9::write_big_endian     ... bench:     430,568 ns/iter (+/- 1,620)
test uint128_9::write_little_endian  ... bench:     430,567 ns/iter (+/- 3,753)
test uint128_9::write_native_endian  ... bench:     430,459 ns/iter (+/- 257)

[fintelia]

And if the byte count is not black_box'd and gets inlined...

On master:

test uint_1::write_big_endian        ... bench:      21,528 ns/iter (+/- 120)
test uint_1::write_little_endian     ... bench:      21,529 ns/iter (+/- 109)
test uint_1::write_native_endian     ... bench:      21,532 ns/iter (+/- 162)
test uint_2::write_big_endian        ... bench:      21,518 ns/iter (+/- 14)
test uint_2::write_little_endian     ... bench:      21,518 ns/iter (+/- 18)
test uint_2::write_native_endian     ... bench:      21,518 ns/iter (+/- 12)
test uint_3::write_big_endian        ... bench:      21,518 ns/iter (+/- 35)
test uint_3::write_little_endian     ... bench:      21,518 ns/iter (+/- 16)
test uint_3::write_native_endian     ... bench:      21,518 ns/iter (+/- 107)
test uint_4::write_big_endian        ... bench:      21,518 ns/iter (+/- 32)
test uint_4::write_little_endian     ... bench:      21,523 ns/iter (+/- 161)
test uint_4::write_native_endian     ... bench:      21,555 ns/iter (+/- 179)
test uint_5::write_big_endian        ... bench:      21,549 ns/iter (+/- 154)
test uint_5::write_little_endian     ... bench:      21,602 ns/iter (+/- 235)
test uint_5::write_native_endian     ... bench:      21,555 ns/iter (+/- 166)
test uint_6::write_big_endian        ... bench:      21,518 ns/iter (+/- 20)
test uint_6::write_little_endian     ... bench:      21,518 ns/iter (+/- 61)
test uint_6::write_native_endian     ... bench:      21,521 ns/iter (+/- 203)
test uint_7::write_big_endian        ... bench:      21,518 ns/iter (+/- 13)
test uint_7::write_little_endian     ... bench:      21,518 ns/iter (+/- 41)
test uint_7::write_native_endian     ... bench:      21,518 ns/iter (+/- 22)
test uint_8::write_big_endian        ... bench:      21,518 ns/iter (+/- 9)
test uint_8::write_little_endian     ... bench:      21,517 ns/iter (+/- 14)
test uint_8::write_native_endian     ... bench:      21,518 ns/iter (+/- 12)

test uint128_10::write_big_endian    ... bench:      21,522 ns/iter (+/- 48)
test uint128_10::write_little_endian ... bench:      21,518 ns/iter (+/- 29)
test uint128_10::write_native_endian ... bench:      21,519 ns/iter (+/- 1,763)
test uint128_11::write_big_endian    ... bench:      21,518 ns/iter (+/- 60)
test uint128_11::write_little_endian ... bench:      21,517 ns/iter (+/- 13)
test uint128_11::write_native_endian ... bench:      21,518 ns/iter (+/- 79)
test uint128_12::write_big_endian    ... bench:      21,517 ns/iter (+/- 8)
test uint128_12::write_little_endian ... bench:      21,517 ns/iter (+/- 11)
test uint128_12::write_native_endian ... bench:      21,517 ns/iter (+/- 20)
test uint128_13::write_big_endian    ... bench:      21,517 ns/iter (+/- 29)
test uint128_13::write_little_endian ... bench:      21,517 ns/iter (+/- 12)
test uint128_13::write_native_endian ... bench:      21,517 ns/iter (+/- 12)
test uint128_14::write_big_endian    ... bench:      21,517 ns/iter (+/- 21)
test uint128_14::write_little_endian ... bench:      21,517 ns/iter (+/- 9)
test uint128_14::write_native_endian ... bench:      21,517 ns/iter (+/- 18)
test uint128_15::write_big_endian    ... bench:      21,517 ns/iter (+/- 20)
test uint128_15::write_little_endian ... bench:      21,517 ns/iter (+/- 11)
test uint128_15::write_native_endian ... bench:      21,517 ns/iter (+/- 11)
test uint128_16::write_big_endian    ... bench:      21,519 ns/iter (+/- 66)
test uint128_16::write_little_endian ... bench:      21,518 ns/iter (+/- 31)
test uint128_16::write_native_endian ... bench:      21,517 ns/iter (+/- 34)
test uint128_1::write_big_endian     ... bench:      21,518 ns/iter (+/- 12)
test uint128_1::write_little_endian  ... bench:      21,517 ns/iter (+/- 15)
test uint128_1::write_native_endian  ... bench:      21,518 ns/iter (+/- 45)
test uint128_2::write_big_endian     ... bench:      21,518 ns/iter (+/- 22)
test uint128_2::write_little_endian  ... bench:      21,517 ns/iter (+/- 12)
test uint128_2::write_native_endian  ... bench:      21,517 ns/iter (+/- 24)
test uint128_3::write_big_endian     ... bench:      21,522 ns/iter (+/- 37)
test uint128_3::write_little_endian  ... bench:      21,518 ns/iter (+/- 9)
test uint128_3::write_native_endian  ... bench:      21,517 ns/iter (+/- 10)
test uint128_4::write_big_endian     ... bench:      21,526 ns/iter (+/- 728)
test uint128_4::write_little_endian  ... bench:      21,526 ns/iter (+/- 29)
test uint128_4::write_native_endian  ... bench:      21,540 ns/iter (+/- 281)
test uint128_5::write_big_endian     ... bench:      21,524 ns/iter (+/- 199)
test uint128_5::write_little_endian  ... bench:      21,816 ns/iter (+/- 551)
test uint128_5::write_native_endian  ... bench:      21,571 ns/iter (+/- 932)
test uint128_6::write_big_endian     ... bench:      21,591 ns/iter (+/- 8,116)
test uint128_6::write_little_endian  ... bench:      21,527 ns/iter (+/- 48)
test uint128_6::write_native_endian  ... bench:      21,519 ns/iter (+/- 85)
test uint128_7::write_big_endian     ... bench:      21,550 ns/iter (+/- 177)
test uint128_7::write_little_endian  ... bench:      21,551 ns/iter (+/- 105)
test uint128_7::write_native_endian  ... bench:      21,519 ns/iter (+/- 97)
test uint128_8::write_big_endian     ... bench:      21,594 ns/iter (+/- 740)
test uint128_8::write_little_endian  ... bench:      21,519 ns/iter (+/- 208)
test uint128_8::write_native_endian  ... bench:      21,525 ns/iter (+/- 427)
test uint128_9::write_big_endian     ... bench:      21,523 ns/iter (+/- 216)
test uint128_9::write_little_endian  ... bench:      21,517 ns/iter (+/- 132)
test uint128_9::write_native_endian  ... bench:      21,517 ns/iter (+/- 98)

With this PR:

test uint_1::write_big_endian        ... bench:      21,538 ns/iter (+/- 38)
test uint_1::write_little_endian     ... bench:      21,540 ns/iter (+/- 80)
test uint_1::write_native_endian     ... bench:      21,528 ns/iter (+/- 34)
test uint_2::write_big_endian        ... bench:      21,540 ns/iter (+/- 63)
test uint_2::write_little_endian     ... bench:      21,531 ns/iter (+/- 34)
test uint_2::write_native_endian     ... bench:      21,543 ns/iter (+/- 66)
test uint_3::write_big_endian        ... bench:      21,535 ns/iter (+/- 44)
test uint_3::write_little_endian     ... bench:      21,540 ns/iter (+/- 39)
test uint_3::write_native_endian     ... bench:      21,534 ns/iter (+/- 58)
test uint_4::write_big_endian        ... bench:      21,540 ns/iter (+/- 51)
test uint_4::write_little_endian     ... bench:      21,526 ns/iter (+/- 48)
test uint_4::write_native_endian     ... bench:      21,533 ns/iter (+/- 41)
test uint_5::write_big_endian        ... bench:      21,537 ns/iter (+/- 37)
test uint_5::write_little_endian     ... bench:      21,526 ns/iter (+/- 35)
test uint_5::write_native_endian     ... bench:      21,528 ns/iter (+/- 32)
test uint_6::write_big_endian        ... bench:      21,528 ns/iter (+/- 33)
test uint_6::write_little_endian     ... bench:      21,540 ns/iter (+/- 75)
test uint_6::write_native_endian     ... bench:      21,535 ns/iter (+/- 32)
test uint_7::write_big_endian        ... bench:      21,542 ns/iter (+/- 447)
test uint_7::write_little_endian     ... bench:      21,531 ns/iter (+/- 39)
test uint_7::write_native_endian     ... bench:      21,532 ns/iter (+/- 35)
test uint_8::write_big_endian        ... bench:      21,550 ns/iter (+/- 374)
test uint_8::write_little_endian     ... bench:      21,547 ns/iter (+/- 64)
test uint_8::write_native_endian     ... bench:      21,548 ns/iter (+/- 74)

test uint128_10::write_big_endian    ... bench:      21,534 ns/iter (+/- 71)
test uint128_10::write_little_endian ... bench:      21,541 ns/iter (+/- 38)
test uint128_10::write_native_endian ... bench:      21,533 ns/iter (+/- 37)
test uint128_11::write_big_endian    ... bench:      21,545 ns/iter (+/- 76)
test uint128_11::write_little_endian ... bench:      21,546 ns/iter (+/- 111)
test uint128_11::write_native_endian ... bench:      21,527 ns/iter (+/- 51)
test uint128_12::write_big_endian    ... bench:      21,529 ns/iter (+/- 39)
test uint128_12::write_little_endian ... bench:      21,528 ns/iter (+/- 38)
test uint128_12::write_native_endian ... bench:      21,546 ns/iter (+/- 344)
test uint128_13::write_big_endian    ... bench:      21,542 ns/iter (+/- 120)
test uint128_13::write_little_endian ... bench:      21,537 ns/iter (+/- 35)
test uint128_13::write_native_endian ... bench:      21,535 ns/iter (+/- 37)
test uint128_14::write_big_endian    ... bench:      21,525 ns/iter (+/- 32)
test uint128_14::write_little_endian ... bench:      21,530 ns/iter (+/- 33)
test uint128_14::write_native_endian ... bench:      21,542 ns/iter (+/- 52)
test uint128_15::write_big_endian    ... bench:      21,537 ns/iter (+/- 40)
test uint128_15::write_little_endian ... bench:      21,527 ns/iter (+/- 36)
test uint128_15::write_native_endian ... bench:      21,527 ns/iter (+/- 50)
test uint128_16::write_big_endian    ... bench:      21,526 ns/iter (+/- 124)
test uint128_16::write_little_endian ... bench:      21,526 ns/iter (+/- 126)
test uint128_16::write_native_endian ... bench:      21,527 ns/iter (+/- 136)
test uint128_1::write_big_endian     ... bench:      21,525 ns/iter (+/- 120)
test uint128_1::write_little_endian  ... bench:      21,526 ns/iter (+/- 132)
test uint128_1::write_native_endian  ... bench:      21,526 ns/iter (+/- 163)
test uint128_2::write_big_endian     ... bench:      21,525 ns/iter (+/- 124)
test uint128_2::write_little_endian  ... bench:      21,526 ns/iter (+/- 163)
test uint128_2::write_native_endian  ... bench:      21,530 ns/iter (+/- 142)
test uint128_3::write_big_endian     ... bench:      21,526 ns/iter (+/- 157)
test uint128_3::write_little_endian  ... bench:      21,526 ns/iter (+/- 200)
test uint128_3::write_native_endian  ... bench:      21,524 ns/iter (+/- 142)
test uint128_4::write_big_endian     ... bench:      21,529 ns/iter (+/- 146)
test uint128_4::write_little_endian  ... bench:      21,523 ns/iter (+/- 116)
test uint128_4::write_native_endian  ... bench:      21,526 ns/iter (+/- 124)
test uint128_5::write_big_endian     ... bench:      21,528 ns/iter (+/- 154)
test uint128_5::write_little_endian  ... bench:      21,526 ns/iter (+/- 121)
test uint128_5::write_native_endian  ... bench:      21,526 ns/iter (+/- 144)
test uint128_6::write_big_endian     ... bench:      21,555 ns/iter (+/- 118)
test uint128_6::write_little_endian  ... bench:      21,528 ns/iter (+/- 77)
test uint128_6::write_native_endian  ... bench:      21,572 ns/iter (+/- 2,543)
test uint128_7::write_big_endian     ... bench:      21,526 ns/iter (+/- 65)
test uint128_7::write_little_endian  ... bench:      21,536 ns/iter (+/- 59)
test uint128_7::write_native_endian  ... bench:      21,526 ns/iter (+/- 59)
test uint128_8::write_big_endian     ... bench:      21,559 ns/iter (+/- 67)
test uint128_8::write_little_endian  ... bench:      21,540 ns/iter (+/- 61)
test uint128_8::write_native_endian  ... bench:      21,527 ns/iter (+/- 54)
test uint128_9::write_big_endian     ... bench:      21,537 ns/iter (+/- 129)
test uint128_9::write_little_endian  ... bench:      21,533 ns/iter (+/- 126)
test uint128_9::write_native_endian  ... bench:      21,552 ns/iter (+/- 131)