Revision aaf73e65

b/snf-common/synnefo/util/number.py
1
# -*- coding: utf-8 -*-
2

  
3
# Copyright 2013 GRNET S.A. All rights reserved.
4
#
5
# Redistribution and use in source and binary forms, with or
6
# without modification, are permitted provided that the following
7
# conditions are met:
8
#
9
#   1. Redistributions of source code must retain the above
10
#      copyright notice, this list of conditions and the following
11
#      disclaimer.
12
#
13
#   2. Redistributions in binary form must reproduce the above
14
#      copyright notice, this list of conditions and the following
15
#      disclaimer in the documentation and/or other materials
16
#      provided with the distribution.
17
#
18
# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
19
# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
22
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
25
# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29
# POSSIBILITY OF SUCH DAMAGE.
30
#
31
# The views and conclusions contained in the software and
32
# documentation are those of the authors and should not be
33
# interpreted as representing official policies, either expressed
34
# or implied, of GRNET S.A.
35

  
36
def strbigdec(bignum, nr_lsd=12):
37
    all_digits = str(bignum)
38
    ms_digits = all_digits[:-nr_lsd]
39
    if not ms_digits:
40
        return all_digits
41

  
42
    if len(ms_digits.rstrip('0')) == 1:
43
        approx = ''
44
    else:
45
        approx = '~'
46

  
47
    ls_digits = all_digits[-nr_lsd:]
48
    ls_num = int(ls_digits)
49
    ms_num = bignum - ls_num
50
    if ls_num:
51
        display = "[%s%1.0e]%+d" % (approx, ms_num, ls_num)
52
    else:
53
        display = "[%s%1.0e]" % (approx, ms_num)
54
    return display
55

  

Also available in: Unified diff