atof

(3)

convert a string to a double

#include <stdlib.h> double atof(const char *nptr);

LIBRARY

Standard C library (libc, -lc)

The atof() function converts the initial portion of the string pointed to by nptr to double. The behavior is the same as

strtod(nptr, NULL);

except that atof() does not detect errors.

The converted value.

For an explanation of the terms used in this section, see attributes(7).

Interface	Attribute	Value
atof ()	Thread safety	MT-Safe locale

C11, POSIX.1-2008.

POSIX.1-2001, C89, C99, SVr4, 4.3BSD.