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POLY: add erase_polynom() function

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hasufell 2014-04-17 17:34:48 +02:00 committed by malte
parent f8b1649279
commit ed1fb0f0a9
2 changed files with 16 additions and 0 deletions
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14
src/poly.c
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@ -134,6 +134,20 @@ pb_poly *build_polynom(int const * const c,
return new_poly; return new_poly;
} }
/**
* Sets all the polynomial coefficients to +0.
*
* @param poly the polynomial
* @param len the length of the polynomial
*/
void erase_polynom(pb_poly *poly, size_t len)
{
for (unsigned int i = 0; i < len ; i++) {
mp_set(&(poly->terms[i]), 0);
mp_abs(&(poly->terms[i]), &(poly->terms[i]));
}
}
/** /**
* This deletes the internal structure of a polynomial, * This deletes the internal structure of a polynomial,
* and frees the pointer. Don't call this on stack variables, * and frees the pointer. Don't call this on stack variables,

2
src/poly.h
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@ -126,6 +126,8 @@ pb_poly *build_polynom(int const * const c,
const size_t len, const size_t len,
ntru_context *ctx); ntru_context *ctx);
void erase_polynom(pb_poly *poly, size_t len);
void delete_polynom(pb_poly *new_poly); void delete_polynom(pb_poly *new_poly);
void pb_starmultiply(pb_poly *a, void pb_starmultiply(pb_poly *a,