[unix-history] / usr / man / man3 / atof.3

.TH ATOF 3 
.SH NAME
atof, atoi, atol \- convert ASCII to numbers
.SH SYNOPSIS
.B double atof(nptr)
.br
.B char *nptr;
.PP
.B atoi(nptr)
.br
.B char *nptr;
.PP
.B long atol(nptr)
.br
.B char *nptr;
.SH DESCRIPTION
These functions convert a string pointed to by
.I nptr
to floating, integer, and long integer
representation respectively.
The first unrecognized character ends the string.
.PP
.I Atof
recoginizes 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.
.PP
.I Atoi
and
.I atol
recognize an optional string of tabs and spaces,
then an optional sign, then a string of
digits.
.SH SEE ALSO
scanf(3)
.SH BUGS
There are no provisions for overflow.
Commit	Line	Data
e6817382 BJ	1	.TH ATOF 3
	2	.SH NAME
	3	atof, atoi, atol \- convert ASCII to numbers
	4	.SH SYNOPSIS
	5	.B double atof(nptr)
	6	.br
	7	.B char *nptr;
	8	.PP
	9	.B atoi(nptr)
	10	.br
	11	.B char *nptr;
	12	.PP
	13	.B long atol(nptr)
	14	.br
	15	.B char *nptr;
	16	.SH DESCRIPTION
	17	These functions convert a string pointed to by
	18	.I nptr
	19	to floating, integer, and long integer
	20	representation respectively.
	21	The first unrecognized character ends the string.
	22	.PP
	23	.I Atof
	24	recoginizes an optional string of tabs and spaces,
	25	then an optional sign, then
	26	a string of digits optionally containing a decimal
	27	point, then an optional `e' or `E' followed
	28	by an optionally signed integer.
	29	.PP
	30	.I Atoi
	31	and
	32	.I atol
	33	recognize an optional string of tabs and spaces,
	34	then an optional sign, then a string of
	35	digits.
	36	.SH SEE ALSO
	37	scanf(3)
	38	.SH BUGS
	39	There are no provisions for overflow.