#!/usr/bin/env python3
# encoding: utf-8
#
# Copyright (c) 2010 Doug Hellmann. All rights reserved.
#
"""Checking the sign of a value.
"""

#end_pymotw_header
import math

HEADINGS = ('f', 's', '< 0', '> 0', '= 0')
print('{:^5} {:^5} {:^5} {:^5} {:^5}'.format(*HEADINGS))
print('{:-^5} {:-^5} {:-^5} {:-^5} {:-^5}'.format(
 '', '', '', '', '',
))

VALUES = [
 -1.0,
 0.0,
 1.0,
 float('-inf'),
 float('inf'),
 float('-nan'),
 float('nan'),
]

for f in VALUES:
 s = int(math.copysign(1, f))
 print('{:5.1f} {:5d} {!s:5} {!s:5} {!s:5}'.format(
 f, s, f < 0, f > 0, f == 0,
 ))