ATOF(3) BSD Programmer's Manual ATOF(3)
atof - convert ASCII string to double
#include <stdlib.h> double atof(const char *nptr);
The atof() function converts the initial portion of the string pointed to by nptr to double representation. It is equivalent to: strtod(nptr, (char **)NULL);
atoi(3), atol(3), strtod(3), strtol(3), strtoul(3)
The atof() function conforms to ANSI X3.159-1989 ("ANSI C89"). MirBSD #10-current June 29, 1991 1