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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_vecgrow.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: charles <charles.cabergs@gmail.com> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/04/01 19:13:07 by charles #+# #+# */
/* Updated: 2020/04/02 10:43:01 by charles ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft_vec.h"
/*
** \brief Vector Growth factor
*/
#define FT_VEC_GROWTH_FACTOR 1.5
/*
** \brief Grow the vector capacity by a constant factor
** \param vec Vector to grow
** \return Passed vector of NULL on error
*/
t_ftvec *ft_vecgrow(t_ftvec *vec)
{
size_t new_capacity;
void **new_data;
if (vec->capacity <= 1)
new_capacity = 2;
else
new_capacity = vec->capacity * FT_VEC_GROWTH_FACTOR;
if ((new_data = (void**)malloc(sizeof(void*) * new_capacity)) == NULL)
return (NULL);
ft_memcpy(new_data, vec->data, vec->size * sizeof(void*));
free(vec->data);
vec->data = new_data;
vec->capacity = new_capacity;
return (vec);
}
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