A 100LOC C impl of memset, that is faster than glibc's

Re:A 100LOC C impl of memset, that is faster than glibc's by junon on Friday November 12, 2021 @02:50PM (#29203773)

There are a number of standard functions that can achieve this, namely in string.h. Performance is a question of course.

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Re:A 100LOC C impl of memset, that is faster than glibc's by rwmj on Friday November 12, 2021 @05:11PM (#29205137)

Which functions in particular?

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Re:A 100LOC C impl of memset, that is faster than glibc's by junon on Friday November 12, 2021 @08:49PM (#29206586)

    strchr(str, 0) == NULL
    memchr(str, 0, len) == NULL

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Re:A 100LOC C impl of memset, that is faster than glibc's by klyrs on Friday November 12, 2021 @11:34PM (#29207392)

Those find the first zero -- not the number of contiguous zeros.

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Re:A 100LOC C impl of memset, that is faster than glibc's by junon on Saturday November 13, 2021 @05:20PM (#29213672)

Oops, you're right. I was going to reach for `strcspn` but then realized it doesn't work for null bytes.

Huh. OP is right, there is no good function for this in the standard library.

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