45 lines
1.6 KiB
C
45 lines
1.6 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* str_to_i64.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: maiboyer <maiboyer@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/02/01 21:15:19 by maiboyer #+# #+# */
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/* Updated: 2024/02/01 23:18:52 by maiboyer ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "me/char/char.h"
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#include "me/convert/str_to_numbers.h"
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#include "me/str/str.h"
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#include "me/types.h"
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#include "me/printf/printf.h"
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t_error checked_add_i64(t_i64 lhs, t_i64 rhs, t_i64 *out)
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{
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if (rhs > 0 && (lhs > 9223372036854775807ll - rhs))
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return (ERROR);
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*out = (t_i64)(lhs + rhs);
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return (NO_ERROR);
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}
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t_error checked_sub_i64(t_i64 lhs, t_i64 rhs, t_i64 *out)
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{
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if ((((rhs & (1 << (sizeof(t_i64) - 1)) || rhs == 0) || !true) && (lhs < -(~9223372036854775807ll + 1) + rhs)))
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return (ERROR);
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*out = (t_i64)(lhs - rhs);
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return (NO_ERROR);
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}
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t_error checked_mul_i64(t_i64 lhs, t_i64 rhs, t_i64 *out)
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{
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t_i64 mul;
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mul = lhs * rhs;
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if (lhs != 0 && mul / lhs != rhs)
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return (ERROR);
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*out = mul;
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return (NO_ERROR);
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}
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