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atof

NEAR SYNTAX: float _n_atof( char * sptr );

FAR SYNTAX: float _f_atof( char far * sptr );

NOTE	By default, atof() is defined to _n_atof().

Description

ANSI string to float conversion (UNIX compatible).

For Rabbit 4000+ users, this function supports FAR pointers. By default the near version of the function is called. The macro USE_FAR_STRING will change all calls to functions in this library to their far versions. The user may also explicitly call the far version with _f_strfunc where strfunc is the name of the string function.

Because FAR addresses are larger, the far versions of this function will run slightly slower than the near version. To explicitly call the near version when the USE_FAR_STRING macro is defined and all pointers are near pointers, append _n_ to the function name, e.g., _n_strfunc. For more information about FAR pointers, see the Dynamic C User's Manual or the samples in Samples/Rabbit4000/FAR/.

Parameters

sptr

String to convert.

Return value

The converted floating value.
If the conversion is invalid, _xtoxErr is set to 1. Otherwise _xtoxErr is set to 0.

Library

STRING.LIB

See also

atoi, atol, strtod