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radad
Joined: 19 May 2004
Posts: 246
Location: Melbourne, Australia
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 Posted: Tue May 15, 2007 10:08 am Post subject: png and pow |
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I downloaded and built libpng from svn and was getting some missing references for pow and powf. I fixed the powf by adding mf to the list of libraries but I couldnt find pow anywhere in the ps2sdk. Does it exist?
As a workaround I disabled the floating point support in libpng. Is libpng still able to open all variations? |
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radad
Joined: 19 May 2004
Posts: 246
Location: Melbourne, Australia
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| Posted: Fri May 18, 2007 12:45 pm Post subject: |
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It seems the floating point unit in the ps2 only handles single precision floats. So what is a good strategy for handling double precision float functions like 'pow'. Would it be ok to just call the single precision version?
ie
| Code: |
double pow(double x, double y)
{
return powf(x, y);
}
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EEUG
Joined: 13 May 2005
Posts: 136
Location: The Netherlands
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| Posted: Fri May 18, 2007 5:41 pm Post subject: |
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| ...ogg/vorbis decoder in SMS uses 'powf' from 'ps2sdk'. Alternatively you can try to use 'pow' from 'libm' which is part of the toolchain (I think it uses emulation for the doubles)... |
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