Re: [Minios-devel] [UNIKRAFT PATCH v3 1/3] lib/nolibc: Introduce atoi() function

[Yuri Volchkov <yuri.volchkov@xxxxxxxxx>]

Reviewed-by: Yuri Volchkov <yuri.volchkov@xxxxxxxxx>

Simon Kuenzer <simon.kuenzer@xxxxxxxxx> writes:

> From: Sharan Santhanam <sharan.santhanam@xxxxxxxxx>
>
> Adds atoi() conversion function to stdlib. It is based on strtoll().
>
> Signed-off-by: Simon Kuenzer <simon.kuenzer@xxxxxxxxx>
> Signed-off-by: Sharan Santhanam <sharan.santhanam@xxxxxxxxx>
> ---
>  lib/nolibc/include/stdlib.h |  6 ++++++
>  lib/nolibc/stdlib.c         | 11 +++++++++++
>  2 files changed, 17 insertions(+)
>
> diff --git a/lib/nolibc/include/stdlib.h b/lib/nolibc/include/stdlib.h
> index dd6f9f7..f2a0ccf 100644
> --- a/lib/nolibc/include/stdlib.h
> +++ b/lib/nolibc/include/stdlib.h
> @@ -48,6 +48,12 @@ unsigned long strtoul(const char *nptr, char **endptr, int 
> base);
>  long long strtoll(const char *nptr, char **endptr, int base);
>  unsigned long long strtoull(const char *nptr, char **endptr, int base);
>  
> +/**
> + * Convert a string to an integer
> + * @s: The start of the string
> + */
> +int atoi(const char *s);
> +
>  #if CONFIG_LIBUKALLOC
>  /* Allocate size bytes of memory. Returns pointer to start of allocated 
> memory,
>   * or NULL on failure.
> diff --git a/lib/nolibc/stdlib.c b/lib/nolibc/stdlib.c
> index d48083a..22afa77 100644
> --- a/lib/nolibc/stdlib.c
> +++ b/lib/nolibc/stdlib.c
> @@ -276,3 +276,14 @@ unsigned long long strtoull(const char *nptr, char 
> **endptr, int base)
>               *endptr = __DECONST(char *, any ? s - 1 : nptr);
>       return acc;
>  }
> +
> +int atoi(const char *s)
> +{
> +     long long atoll;
> +
> +     atoll = strtoll(s, NULL, 10);
> +     atoll = (atoll > __I_MAX) ? __I_MAX : atoll;
> +     atoll = (atoll < __I_MIN) ? __I_MIN : atoll;
> +
> +     return (int) atoll;
> +}
> -- 
> 2.7.4
>

-- 
Yuri Volchkov
Software Specialist

NEC Europe Ltd
Kurfürsten-Anlage 36
D-69115 Heidelberg

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