diff options
Diffstat (limited to 'src/str')
| -rw-r--r-- | src/str/ft_atof.c | 18 | ||||
| -rw-r--r-- | src/str/ft_strtof.c | 44 |
2 files changed, 62 insertions, 0 deletions
diff --git a/src/str/ft_atof.c b/src/str/ft_atof.c new file mode 100644 index 0000000..74d5a42 --- /dev/null +++ b/src/str/ft_atof.c @@ -0,0 +1,18 @@ +/* ************************************************************************** */ +/* */ +/* ::: :::::::: */ +/* ft_atof.c :+: :+: :+: */ +/* +:+ +:+ +:+ */ +/* By: charles <charles.cabergs@gmail.com> +#+ +:+ +#+ */ +/* +#+#+#+#+#+ +#+ */ +/* Created: 2020/05/10 21:03:50 by charles #+# #+# */ +/* Updated: 2020/05/10 21:04:54 by charles ### ########.fr */ +/* */ +/* ************************************************************************** */ + +#include "libft_str.h" + +float ft_atof(const char *nptr) +{ + return (ft_strtof(nptr, NULL)); +} diff --git a/src/str/ft_strtof.c b/src/str/ft_strtof.c new file mode 100644 index 0000000..f147394 --- /dev/null +++ b/src/str/ft_strtof.c @@ -0,0 +1,44 @@ +/* ************************************************************************** */ +/* */ +/* ::: :::::::: */ +/* ft_strtof.c :+: :+: :+: */ +/* +:+ +:+ +:+ */ +/* By: charles <charles.cabergs@gmail.com> +#+ +:+ +#+ */ +/* +#+#+#+#+#+ +#+ */ +/* Created: 2020/05/09 12:09:13 by charles #+# #+# */ +/* Updated: 2020/05/09 12:23:03 by charles ### ########.fr */ +/* */ +/* ************************************************************************** */ + +#include "libft_str.h" + +/* +** \brief Extract a float from a string +** \param nptr String to extract from +** \param endptr If not NULL pointer to last character +** of the extraction is placed in *endptr +** \return Extracted float value +** \note This function doesn't try mimic the original perfectly +** (no hexadecimal, exponent, NaN, inf handling) +*/ + +float ft_strtof(const char *nptr, char **endptr) +{ + float n; + bool is_neg; + const char *tmp; + + while (ft_isspace(*nptr)) + nptr++; + is_neg = *nptr == '-'; + if (*nptr == '-' || *nptr == '+') + nptr++; + n = (float)ft_strtol(nptr, (char**)&nptr, 10); + if (*nptr == '.') + nptr++; + tmp = nptr; + n += (float)ft_strtol(nptr, (char**)&nptr, 10) / (10 * (nptr - tmp)); + if (endptr != NULL) + *endptr = (char*)nptr; + return (is_neg ? -n : n); +} |