atof - convert a string to a double
double atof(const char *nptr);
The atof() function converts the initial portion of the string pointed to
by nptr to double. The behavior is the same as
except that atof() does not detect errors.
For an explanation of the terms used in this section, see attributes(7).
POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD.
This page is part of release 5.13 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the latest
version of this page, can be found at https://www.kernel.org/doc/man-pages/.