summaryrefslogtreecommitdiff
path: root/static/v10/man3/atof.3
blob: 07d596136fa3f52619559762cde514e143680849 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
.pa 1
.he 'ATOF (III)'1/15/73'ATOF (III)'
.ti 0
NAME		atof -- ascii to floating
.sp
.ti 0
SYNOPSIS	jsr	r5,atof; subr
.sp
.ti 0
DESCRIPTION	atof____
will convert an ascii stream to a floating
number returned in fr0.

The subroutine subr____
(supplied by the caller)
is called on r5 for each character of the
ascii stream.
subr____ should return the character in r0.
The first character not used in the conversion
is left in r0.
.sp
The only numbers recognized are:  an optional minus
sign followed by a string of digits optionally containing
one decimal point, then followed optionally by the
letter "e" followed by a signed integer.
.sp
The subroutine subr____ must not disturb any registers.
.sp
.ti 0
FILES		kept in /lib/liba.a
.sp
.ti 0
SEE ALSO	Calls atoi (III)
.sp
.ti 0
DIAGNOSTICS	There are none; overflow results in a very large
number and garbage characters terminate the scan.
.sp
.ti 0
BUGS		The
routine should accept initial "+", initial blanks, and "E" for "e".

Overflow should be signalled with the carry bit.