The parse-float Reference Manual

3.1.1 parse-float/parse-float.asd

Source

parse-float.asd.

Parent Component

parse-float (system).

ASDF Systems

parse-float.

3.1.2 parse-float/package.lisp

Source

parse-float.asd.

Parent Component

parse-float (system).

Packages

parse-float.

3.1.3 parse-float/parse-float.lisp

Dependency

package.lisp (file).

Source

parse-float.asd.

Parent Component

parse-float (system).

Public Interface

parse-float (function).

Internals

• +whitespace-characters+ (constant).
• bounding-index (type).
• parse-integer-only (function).
• sign-char-p (function).
• skip-whitespaces (function).
• string-index (type).
• valid-radix (type).
• whitespace-char-p (function).

5.1.1 Ordinary functions

Function: parse-float (string &key start end radix junk-allowed decimal-character exponent-character type) ¶

Similar to PARSE-INTEGER, but parses a floating point value and returns the value as the specified TYPE (by default *READ-DEFAULT-FLOAT-FORMAT*). The DECIMAL-CHARACTER (by default #.) specifies the separator between the integer and decimal parts, and the EXPONENT-CHARACTER (by default #e, case insensitive) specifies the character before the exponent. Note that the exponent is only parsed if RADIX is 10.

Package

parse-float.

Source

parse-float.lisp.

5.2.1 Constants

Constant: +whitespace-characters+ ¶

List of whitespace characters

Package

parse-float.

Source

parse-float.lisp.

5.2.2 Ordinary functions

Function: parse-integer-only (string &key start end radix allow-sign) ¶

Parse an integer from a string, without skipping whitespaces. Returns three values: the integer, the position in the string that ended the parsing, and a boolean which is T if the parsing ended due to a whitespace or end of the string, and NIL otherwise. If allow-sign is NIL (T by default), also signs are not allowed in the string (i.e. cannot start with #+ or #-).

Package

parse-float.

Source

parse-float.lisp.

Function: sign-char-p (character) ¶

Predicate for testing if CHARACTER is a sign character (i.e. #+ or #-).

Package

parse-float.

Source

parse-float.lisp.

Function: skip-whitespaces (string &key start end) ¶

For the substring in STRING delimited by START and END, skip all the whitespace at the beginning and return the index of the first non-whitespace character, or END if no non-whitespace characters were found.

Package

parse-float.

Source

parse-float.lisp.

Function: whitespace-char-p (character) ¶

Predicate for testing if CHARACTER is a whitespace character.

Package

parse-float.

Source

parse-float.lisp.

5.2.3 Types

Type: bounding-index () ¶

A valid upper bound to a string.

Package

parse-float.

Source

parse-float.lisp.

Type: string-index () ¶

A valid string index.

Package

parse-float.

Source

parse-float.lisp.

Type: valid-radix () ¶

A valid Common Lisp radix.

Package

parse-float.

Source

parse-float.lisp.