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CMSIS-DSP
Version 1.5.2
CMSIS DSP Software Library
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cos_factors[n] = 2 * cos((2n+1)*pi/(4*N))
for(i = 0; i< N; i++)
{
cos_factors[i]= 2 * cos((2*i+1)*c/2);
} N is the number of factors to generate and c is pi/(2*N) Referenced by arm_dct4_init_f32().
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Referenced by arm_dct4_init_f32().
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Referenced by arm_dct4_init_f32().
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Referenced by arm_dct4_init_f32().
cos_factors[n] = 2 * cos((2n+1)*pi/(4*N))
for(i = 0; i< N; i++)
{
cos_factors[i]= 2 * cos((2*i+1)*c/2);
} N is the number of factors to generate and c is pi/(2*N) Referenced by arm_dct4_init_q15().
Referenced by arm_dct4_init_q15().
Referenced by arm_dct4_init_q15().
Referenced by arm_dct4_init_q15().
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cos_factors[n] = 2 * cos((2n+1)*pi/(4*N))
for(i = 0; i< N; i++)
{
cos_factors[i]= 2 * cos((2*i+1)*c/2);
} N is the number of factors to generate and c is pi/(2*N) Referenced by arm_dct4_init_q31().
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Referenced by arm_dct4_init_q31().
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Referenced by arm_dct4_init_q31().
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Referenced by arm_dct4_init_q31().
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weights[n] = e^(-j*n*pi/(2*N))
for(i = 0; i< N; i++)
{
weights[2*i]= cos(i*c);
weights[(2*i)+1]= -sin(i * c);
} N is the Number of weights to be calculated and c is pi/(2*N) 2*N. Referenced by arm_dct4_init_f32().
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Referenced by arm_dct4_init_f32().
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Referenced by arm_dct4_init_f32().
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Referenced by arm_dct4_init_f32().
weights[n] = e^(-j*n*pi/(2*N))
for(i = 0; i< N; i++)
{
weights[2*i]= cos(i*c);
weights[(2*i)+1]= -sin(i * c);
} N is the Number of weights to be calculated and c is pi/(2*N) 2*N. Referenced by arm_dct4_init_q15().
Referenced by arm_dct4_init_q15().
Referenced by arm_dct4_init_q15().
Referenced by arm_dct4_init_q15().
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weights[n] = e^(-j*n*pi/(2*N))
for(i = 0; i< N; i++)
{
weights[2*i]= cos(i*c);
weights[(2*i)+1]= -sin(i * c);
} N is the Number of weights to be calculated and c is pi/(2*N) 2*N. Referenced by arm_dct4_init_q31().
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Referenced by arm_dct4_init_q31().
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Referenced by arm_dct4_init_q31().
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Referenced by arm_dct4_init_q31().