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Remove type size check, looks like its not needed

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Add check if the type is float. Float byte comparison doesn't work
because +0.0 and -0.0 are considered equal but their byte
representations are not equal.
This commit is contained in:
dec05eba 2020-09-05 14:52:16 +02:00
parent 997451da03
commit db51821a97
1 changed files with 6 additions and 2 deletions
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8
lib/std/mem.zig
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@ -897,7 +897,9 @@ fn boyerMooreHorspoolPreprocess(pattern: []const u8, table: *[256]usize) void {
pub fn lastIndexOf(comptime T: type, haystack: []const T, needle: []const T) ?usize {
if (needle.len > haystack.len or needle.len == 0) return null;
if (!isValidAlign(T.bit_count) or haystack.len < 32 or needle.len <= 2)
// byte comparison with float doesn't work because +0.0 and -0.0 and considered
// equal but their byte representations are not equal.
if (@typeInfo(T) == .Float or haystack.len < 32 or needle.len <= 2)
return lastIndexOfLinear(T, haystack, needle);
const haystack_bytes = sliceAsBytes(haystack);
@ -921,7 +923,9 @@ pub fn lastIndexOf(comptime T: type, haystack: []const T, needle: []const T) ?us
pub fn indexOfPos(comptime T: type, haystack: []const T, start_index: usize, needle: []const T) ?usize {
if (needle.len > haystack.len or needle.len == 0) return null;
if (!isValidAlign(T.bit_count) or haystack.len < 32 or needle.len <= 2)
// byte comparison with float doesn't work because +0.0 and -0.0 and considered
// equal but their byte representations are not equal.
if (@typeInfo(T) == .Float or haystack.len < 32 or needle.len <= 2)
return indexOfPosLinear(T, haystack, start_index, needle);
const haystack_bytes = sliceAsBytes(haystack);