NAME

atof - convert a string to double-precision number

 SYNOPSIS

#include <stdlib.h>

double atof(const char *str);

 DESCRIPTION

The call atof(str) is equivalent to:

strtod(str,(char **)NULL),

except that the handling of errors may differ. If the value cannot be represented, the behaviour is undefined.

 RETURN VALUE

The atof() function returns the converted value if the value can be represented.

 ERRORS

No errors are defined.

 EXAMPLES

None.

 APPLICATION USAGE

The atof() function is subsumed by strtod() but is retained because it is used extensively in existing code. If the number is not known to be in range, strtod() should be used because atof() is not required to perform any error checking.

 FUTURE DIRECTIONS

None.

 SEE ALSO

strtod(), <stdlib.h>.

DERIVATION

Derived from Issue 1 of the SVID.