man uatof () - Converts a string into a double. Allegro game programming library.
NAME
uatof - Converts a string into a double. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
double uatof(const char *s);
DESCRIPTION
Convert as much of the string as possible to an equivalent double precision real number. This function is almost like `ustrtod(s, NULL)'.
RETURN VALUE
Returns the equivalent value, or zero if the string does not represent a number.