NAME¶

atof - convert a string to a double

LIBRARY¶

Standard C library (libc, -lc)

SYNOPSIS¶

#include <stdlib.h>

double atof(const char *nptr);

DESCRIPTION¶

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.

RETURN VALUE¶

The converted value.

ATTRIBUTES¶

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

STANDARDS¶

C11, POSIX.1-2008.

HISTORY¶

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

SEE ALSO¶

atoi(3), atol(3), strfromd(3), strtod(3), strtol(3), strtoul(3)