Man page - atof(3)

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Manual

atof

NAME
LIBRARY
SYNOPSIS
DESCRIPTION
RETURN VALUE
ATTRIBUTES
STANDARDS
HISTORY
SEE ALSO

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).

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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)