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Add strtof native (bug 5909, r=Nextra)

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This commit is contained in:
Vincent Herbet 2014-03-20 18:21:38 +01:00
parent f520a39c89
commit 5dc96ddf47
2 changed files with 43 additions and 6 deletions
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18
amxmodx/string.cpp
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@ -352,17 +352,28 @@ static cell AMX_NATIVE_CALL amx_strtol(AMX *amx, cell *params) /* 3 param */
char *pString = get_amxstring(amx, params[1], 0, len);
cell *endPos = get_amxaddr(amx, params[2]);
*endPos = -1;
char *pEnd = NULL;
long result = strtol(pString, &pEnd, base);
if (pEnd != NULL && pString != pEnd)
*endPos = pEnd - pString;
return result;
}
static cell AMX_NATIVE_CALL amx_strtof(AMX *amx, cell *params) /* 2 param */
{
int len;
char *pString = get_amxstring(amx, params[1], 0, len);
cell *endPos = get_amxaddr(amx, params[2]);
char *pEnd = NULL;
float result = strtod(pString, &pEnd);
*endPos = pEnd - pString;
return amx_ftoc(result);
}
static cell AMX_NATIVE_CALL numtostr(AMX *amx, cell *params) /* 3 param */
{
char szTemp[32];
@ -1275,6 +1286,7 @@ AMX_NATIVE_INFO string_Natives[] =
{"str_to_num", strtonum},
{"strtonum", strtonum},
{"strtol", amx_strtol},
{"strtof", amx_strtof},
{"trim", amx_trim},
{"ucfirst", amx_ucfirst},
{"strtok", amx_strtok},

29
plugins/include/string.inc
View File

@ -109,7 +109,7 @@ native str_to_num(const string[]);
* @param string The string to parse.
* @param endPos The position of the first character following the number.
* On success and when containing only numbers, position is at the end of string, meaning equal to 'string' length.
* On failure, position is sets always to -1.
* On failure, position is sets always to 0.
* @param base The numerical base (radix) that determines the valid characters and their interpretation.
* If this is 0, the base used is determined by the format in the sequence.
* @return On success, the function returns the converted integral number as integer value.
@ -117,7 +117,32 @@ native str_to_num(const string[]);
* If the value read is out of the range of representable values by a cell,
* the function returns 'cellmin' or 'cellmax'.
*/
native strtol(const string[], &endPos = -1, base = 0);
native strtol(const string[], &endPos = 0, base = 0);
/**
* Parses the 'string' interpreting its content as an floating point number and returns its value as a float.
* The function also sets the value of 'endPos' to point to the position of the first character after the number.
*
* This is the same as C++ strtod function with a difference on second param.
*
* The function first discards as many whitespace characters as necessary until the first
* non-whitespace character is found. Then, starting from this character, takes as many
* characters as possible that are valid and interprets them as a numerical value.
* Finally, a position of the first character following the float representation in 'string'
* is stored in 'endPos'.
*
* If the first sequence of non-whitespace characters in 'string' is not a valid float number
* as defined above, or if no such sequence exists because either 'string' is empty or it contains
* only whitespace characters, no conversion is performed.
*
* @param string The string to parse.
* @param endPos The position of the first character following the number.
* On success and when containing only numbers, position is at the end of string, meaning equal to 'string' length.
* On failure, position is sets always to 0.
* @return On success, the function returns the converted floating point number as float value.
* If no valid conversion could be performed, a zero value is returned.
*/
native Float:strtof(const string[], &endPos = 0);
/* Converts float to string. */
native float_to_str(Float:fl, string[], len);