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Re: speed up u8_strstr
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From: |
Bruno Haible |
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Subject: |
Re: speed up u8_strstr |
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Date: |
Sat, 31 Jul 2010 21:48:56 +0200 |
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User-agent: |
KMail/1.9.9 |
Hi Pádraig,
> > the u8_strstr function.
>
> I wonder could we speed that up for UTF-8
> by just deferring to strstr() ?
This is a good idea, because the naïve implementation of u8_strstr is
quadratic (O(n²)), whereas for strstr we now have an O(n) algorithm.
But at the same time, can you also try to apply the O(n) algorithm to
u16_strstr and u32_strstr?
Bruno
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, (continued)
- guarantees of u8_mbtouc/u8_strmbtouc (was Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm), Paolo Bonzini, 2010/07/29
- Re: guarantees of u8_mbtouc/u8_strmbtouc, Bruno Haible, 2010/07/31
- Re: guarantees of u8_mbtouc/u8_strmbtouc, Paolo Bonzini, 2010/07/31
- Re: guarantees of u8_mbtouc/u8_strmbtouc, Bruno Haible, 2010/07/31
- Message not available
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, Paolo Bonzini, 2010/07/29
- Re: speed up u8_strstr, Bruno Haible, 2010/07/31
- Re: speed up u8_strstr,
Bruno Haible <=
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, Bruno Haible, 2010/07/28
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, Paolo Bonzini, 2010/07/28
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, Bruno Haible, 2010/07/31
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, Paolo Bonzini, 2010/07/31
Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, Pádraig Brady, 2010/07/23