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18 lines
409 B
C
18 lines
409 B
C
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#include "ge.h"
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// inz is ge_p3.Z pointer array. contents to .Zs will be overwritten
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void ge_p3_batchtobytes_destructive(bytes32 out[],const ge_p3 in[],fe *inz[],fe tmp[],size_t num)
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{
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fe x;
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fe y;
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fe_batchinvert(inz,tmp,inz,num);
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for (size_t i = 0;i < num;++i) {
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fe_mul(x,in[i].X,*inz[i]);
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fe_mul(y,in[i].Y,*inz[i]);
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fe_tobytes(out[i],y);
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out[i][31] ^= fe_isnegative(x) << 7;
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}
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}
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