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Added an atof function.

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git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@1610 fc73d0e0-1445-4013-8a0c-d673dee63da5
This commit is contained in:
Spoike 2005-11-28 00:05:17 +00:00
parent 280ab8f6aa
commit 7e108c5a71
1 changed files with 36 additions and 1 deletions
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37
plugins/qvm_api.c
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@ -361,7 +361,7 @@ char *strchr(char *str, char sub)
int atoi(char *str)
{
int sign;
int num;
int num = 0;
int base = 10;
while(*(unsigned char*)str < ' ' && *str)
@ -391,6 +391,41 @@ int atoi(char *str)
}
return num*sign;
}
float atof(char *str)
{
int sign;
float num = 0.0f;
float unit = 1;
while(*(unsigned char*)str < ' ' && *str)
str++;
if (*str == '-')
{
sign = -1;
str++;
}
while(1)
{//each time we find a new digit, increase the value of the previous digets by a factor of ten, and add the new
if (*str >= '0' && *str <= '9')
num = num*10 + (*str - '0');
else break; //bad char
}
if (*str == '.')
{ //each time we find a new digit, decrease the value of the following digits.
while(1)
{
if (*str >= '0' && *str <= '9')
{
unit /= 10;
num = num + (*str - '0')*unit;
}
else break; //bad char
}
}
return num*sign;
}
void strcpy(char *d, const char *s)
{