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Fix declarations of complex numbers

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Complex numbers must be declared using a base type of float, double,
or long double.

Originally committed as revision 19390 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2009-07-09 10:16:00 +00:00
parent 0d73abb86a
commit 181b336304
1 changed files with 2 additions and 2 deletions
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4
libavcodec/iirfilter.c
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@ -56,7 +56,7 @@ struct FFIIRFilterCoeffs* ff_iir_filter_init_coeffs(enum IIRFilterType filt_type
int i, j, size;
FFIIRFilterCoeffs *c;
double wa;
complex p[MAXORDER + 1];
double complex p[MAXORDER + 1];
if(filt_type != FF_FILTER_TYPE_BUTTERWORTH || filt_mode != FF_FILTER_MODE_LOWPASS)
return NULL;
@ -78,7 +78,7 @@ struct FFIIRFilterCoeffs* ff_iir_filter_init_coeffs(enum IIRFilterType filt_type
for(i = 1; i <= order; i++)
p[i] = 0.0;
for(i = 0; i < order; i++){
complex zp;
double complex zp;
double th = (i + (order >> 1) + 0.5) * M_PI / order;
zp = cexp(I*th) * wa;
zp = (zp + 2.0) / (zp - 2.0);