15 lines
241 B
C
15 lines
241 B
C
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void chder(float a, float b, float c[], float cder[], int n)
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{
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int j;
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float con;
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cder[n-1]=0.0;
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cder[n-2]=2*(n-1)*c[n-1];
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for (j=n-3;j>=0;j--)
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cder[j]=cder[j+2]+2*(j+1)*c[j+1];
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con=2.0/(b-a);
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for (j=0;j<n;j++)
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cder[j] *= con;
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}
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