[PATCH v5 2/3] cmdline: add floating point support

[Stephen Hemminger]

On Wed,  7 May 2025 16:22:11 +0100
Anatoly Burakov <anatoly.burakov at intel.com> wrote:

> +NUMERIC_TYPES = {
> +    "UINT8": "uint8_t",
> +    "UINT16": "uint16_t",
> +    "UINT32": "uint32_t",
> +    "UINT64": "uint64_t",
> +    "INT8": "int8_t",
> +    "INT16": "int16_t",
> +    "INT32": "int32_t",
> +    "INT64": "int64_t",
> +    "FLOAT_SINGLE": "float",
> +    "FLOAT_DOUBLE": "double",
> +}
>  

Is it really worth having both single and double versions.
Seems like unnecessary complexity at this point.

> @@ -291,6 +302,25 @@ cmdline_parse_num(cmdline_parse_token_hdr_t *tk, const char *srcbuf, void *res,
>  			return -1;
>  		}
>  		return ret;
> +	/* float parsing */
> +	} else if (nd.type >= RTE_FLOAT_SINGLE && nd.type <= RTE_FLOAT_DOUBLE) {
> +		char *end;
> +		double dres = strtod(srcbuf, &end);
> +
> +		if (end == srcbuf || !cmdline_isendoftoken(*end) || isinf(dres))
> +			return -1;
> +
> +		/* we parsed something, now let's ensure it fits */
> +		if (nd.type == RTE_FLOAT_SINGLE) {
> +			float flt = (float)dres;
> +			if (isinf(flt))
> +				return -1;
> +			if (res) *(float *)res = flt;
> +			return end-srcbuf;
> +		} else if (nd.type == RTE_FLOAT_DOUBLE) {
> +			if (res) *(double *)res = dres;
> +			return end-srcbuf;

Space around - please