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POLY: rework poly_new()

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Don't allocate anything here, just operate on
the parameters.
This commit is contained in:
hasufell 2014-05-25 04:16:48 +02:00
parent aa01859192
commit fd0ba50c85
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GPG Key ID: 220CD1C5BDEED020
2 changed files with 15 additions and 16 deletions
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24
src/poly.c
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@ -90,22 +90,21 @@ static void poly_mod2_to_modq(fmpz_poly_t a,
* context ctx and returns a newly allocated polynomial. * context ctx and returns a newly allocated polynomial.
* For an empty polynom, both parameters can be NULL/0. * For an empty polynom, both parameters can be NULL/0.
* *
* @param new_poly the polynomial to initialize and
* fill with coefficients
* @param c array of polynomial coefficients, can be NULL * @param c array of polynomial coefficients, can be NULL
* @param len size of the coefficient array, can be 0 * @param len size of the coefficient array, can be 0
* @return newly allocated polynomial pointer, must be freed * @return newly allocated polynomial pointer, must be freed
* with fmpz_poly_clear() * with fmpz_poly_clear()
*/ */
fmpz_poly_t *poly_new(int const * const c, void poly_new(fmpz_poly_t new_poly,
int const * const c,
const size_t len) const size_t len)
{ {
fmpz_poly_t *new_poly = ntru_malloc(sizeof(*new_poly)); fmpz_poly_init(new_poly);
fmpz_poly_init(*new_poly);
for (unsigned int i = 0; i < len; i++) for (unsigned int i = 0; i < len; i++)
fmpz_poly_set_coeff_si(*new_poly, i, c[i]); fmpz_poly_set_coeff_si(new_poly, i, c[i]);
return new_poly;
} }
/** /**
@ -116,10 +115,9 @@ fmpz_poly_t *poly_new(int const * const c,
* *
* @param poly the polynomial to delete * @param poly the polynomial to delete
*/ */
void poly_delete(fmpz_poly_t *poly) void poly_delete(fmpz_poly_t poly)
{ {
fmpz_poly_clear(*poly); fmpz_poly_clear(poly);
free(poly);
} }
/** /**
@ -132,16 +130,16 @@ void poly_delete(fmpz_poly_t *poly)
* @param poly the polynomial to delete * @param poly the polynomial to delete
* @param ... follow up polynomials * @param ... follow up polynomials
*/ */
void poly_delete_all(fmpz_poly_t *poly, ...) void poly_delete_all(fmpz_poly_t poly, ...)
{ {
fmpz_poly_t *next_poly; fmpz_poly_struct *next_poly;
va_list args; va_list args;
next_poly = poly; next_poly = poly;
va_start(args, poly); va_start(args, poly);
while (next_poly != NULL) { while (next_poly != NULL) {
poly_delete(next_poly); poly_delete(next_poly);
next_poly = va_arg(args, fmpz_poly_t*); next_poly = va_arg(args, fmpz_poly_struct*);
} }
va_end(args); va_end(args);
} }

7
src/poly.h
View File

@ -38,12 +38,13 @@
#include <fmpz_poly.h> #include <fmpz_poly.h>
fmpz_poly_t *poly_new(int const * const c, void poly_new(fmpz_poly_t new_poly,
int const * const c,
const size_t len); const size_t len);
void poly_delete(fmpz_poly_t *poly); void poly_delete(fmpz_poly_t poly);
void poly_delete_all(fmpz_poly_t *poly, ...); void poly_delete_all(fmpz_poly_t poly, ...);
void fmpz_poly_mod_unsigned(fmpz_poly_t a, void fmpz_poly_mod_unsigned(fmpz_poly_t a,
unsigned int mod); unsigned int mod);