atof(3) - Plan 9 from User Space

From adc93f6097615f16d57e8a24a256302f2144ec4e Mon Sep 17 00:00:00 2001 From: rsc Date: Fri, 14 Jan 2005 17:37:50 +0000 Subject: cut out the html - they're going to cause diffing problems. --- man/man3/atof.html | 170 ----------------------------------------------------- 1 file changed, 170 deletions(-) delete mode 100644 man/man3/atof.html (limited to 'man/man3/atof.html') diff --git a/man/man3/atof.html b/man/man3/atof.html deleted file mode 100644 index ef464d0a..00000000 --- a/man/man3/atof.html +++ /dev/null @@ -1,170 +0,0 @@ - -atof(3) - Plan 9 from User Space - - - - -

ATOF(3) ATOF(3) -

-
-

NAME
- -
- - atof, atoi, atol, atoll, charstod, strtod, strtol, strtoll, strtoul, - strtoull – convert text to numbers
- -
-

SYNOPSIS
- -
- - #include <u.h> - #include <libc.h> - - - double atof(char *nptr) - - - - int atoi(char *nptr) - - - - long atol(char *nptr) - - - - vlong atoll(char *nptr) - - - - double charstod(int (*f)(void *), void *a) - - - - double strtod(char *nptr, char **rptr) - - - - long strtol(char *nptr, char **rptr, int base) - - - - vlong strtoll(char *nptr, char **rptr, int base) - - - - ulong strtoul(char *nptr, char **rptr, int base) - - - - vlong strtoull(char *nptr, char **rptr, int base) - -
-

DESCRIPTION
- -
- - Atof, atoi, atol, and atoll convert a string pointed to by nptr - to floating, integer, long integer, and long long integer (vlong) - representation respectively. The first unrecognized character - ends the string. Leading C escapes are understood, as in strtol - with base zero (described below). -
- - Atof recognizes an optional string of tabs and spaces, then an - optional sign, then a string of digits optionally containing a - decimal point, then an optional e or E followed by an optionally - signed integer. -
- - Atoi and atol recognize an optional string of tabs and spaces, - then an optional sign, then a string of decimal digits. -
- - Strtod, strtol, strtoll, strtoul, and strtoull behave similarly - to atof and atol and, if rptr is not zero, set *rptr to point - to the input character immediately after the string converted. - -
- - Strtol, strtoll, strtoul, and strtoull interpret the digit string - in the specified base, from 2 to 36, each digit being less than - the base. Digits with value over 9 are represented by letters, - a-z or A-Z. If base is 0, the input is interpreted as an integral - constant in the style of C (with no suffixed type indicators): - numbers are - octal if they begin with 0, hexadecimal if they begin with 0x - or 0X, otherwise decimal. -
- - Charstod interprets floating point numbers in the manner of atof, - but gets successive characters by calling (*f)(a). The last call - to f terminates the scan, so it must have returned a character - that is not a legal continuation of a number. Therefore, it may - be necessary to back up the input stream one character after - calling charstod.
- -
-

SOURCE
- -
- - /usr/local/plan9/src/lib9 - -
-

SEE ALSO
- -
- - fscanf(3)
- -
-

DIAGNOSTICS
- -
- - Zero is returned if the beginning of the input string is not interpretable - as a number; even in this case, rptr will be updated.
- These routines set errstr.
- -
-

BUGS
- -
- - Atoi and atol accept octal and hexadecimal numbers in the style - of C, contrary to the ANSI specification. -
- - Atof, strtod, strtol, strtoul, strtoll, and strtoull are not provided: - they are expected to be provided by the underlying system. -
- - Because they are implemented in the fmt library, charstod and - strtod are preprocessor macros defined as fmtcharstod and fmtstrtod. - -
- - To avoid name conflicts with the underlying system, atoi, atol, - and atoll are preprocessor macros defined as p9atoi, p9atol, and - p9atoll; see intro(3).
- -
- -

- - -

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