ac2c20045c
* Add McEliece reference implementations * Add Vec implementations of McEliece * Add sse implementations * Add AVX2 implementations * Get rid of stuff not supported by Mac ABI * restrict to two cores * Ditch .data files * Remove .hidden from all .S files * speed up duplicate consistency tests by batching * make cpuinfo more robust * Hope to stabilize macos cpuinfo without ccache * Revert "Hope to stabilize macos cpuinfo without ccache" This reverts commit 6129c3cabe1abbc8b956bc87e902a698e32bf322. * Just hardcode what's available at travis * Fixed-size types in api.h * namespace all header files in mceliece * Ditch operations.h * Get rid of static inline functions * fixup! Ditch operations.h
34 lines
729 B
C
34 lines
729 B
C
/*
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This file is for evaluating a polynomial at one or more field elements
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*/
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#include "root.h"
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#include "params.h"
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/* input: polynomial f and field element a */
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/* return f(a) */
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gf PQCLEAN_MCELIECE348864_CLEAN_eval(gf *f, gf a) {
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int i;
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gf r;
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r = f[ SYS_T ];
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for (i = SYS_T - 1; i >= 0; i--) {
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r = PQCLEAN_MCELIECE348864_CLEAN_gf_mul(r, a);
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r = PQCLEAN_MCELIECE348864_CLEAN_gf_add(r, f[i]);
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}
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return r;
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}
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/* input: polynomial f and list of field elements L */
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/* output: out = [ f(a) for a in L ] */
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void PQCLEAN_MCELIECE348864_CLEAN_root(gf *out, gf *f, gf *L) {
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int i;
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for (i = 0; i < SYS_N; i++) {
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out[i] = PQCLEAN_MCELIECE348864_CLEAN_eval(f, L[i]);
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}
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}
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