summaryrefslogtreecommitdiff
path: root/tests/float/float2int.py
diff options
context:
space:
mode:
Diffstat (limited to 'tests/float/float2int.py')
-rw-r--r--tests/float/float2int.py99
1 files changed, 0 insertions, 99 deletions
diff --git a/tests/float/float2int.py b/tests/float/float2int.py
deleted file mode 100644
index 3596d2f73..000000000
--- a/tests/float/float2int.py
+++ /dev/null
@@ -1,99 +0,0 @@
-# check cases converting float to int, relying only on single precision float
-
-try:
- import ustruct as struct
-except:
- import struct
-
-import sys
-
-maxsize_bits = 0
-maxsize = sys.maxsize
-while maxsize:
- maxsize >>= 1
- maxsize_bits += 1
-
-# work out configuration values
-is_64bit = maxsize_bits > 32
-# 0 = none, 1 = long long, 2 = mpz
-ll_type = None
-if is_64bit:
- if maxsize_bits < 63:
- ll_type = 0
-else:
- if maxsize_bits < 31:
- ll_type = 0
-if ll_type is None:
- one = 1
- if one << 65 < one << 62:
- ll_type = 1
- else:
- ll_type = 2
-
-
-# basic conversion
-print(int(14187745.))
-print("%d" % 14187745.)
-if ll_type == 2:
- print(int(2.**100))
- print("%d" % 2.**100)
-
-testpass = True
-p2_rng = ((30,63,127),(62,63,127))[is_64bit][ll_type]
-for i in range(0,p2_rng):
- bitcnt = len(bin(int(2.**i))) - 3;
- if i != bitcnt:
- print('fail: 2.**%u was %u bits long' % (i, bitcnt));
- testpass = False
-print("power of 2 test: %s" % (testpass and 'passed' or 'failed'))
-
-# TODO why does 10**12 fail this test for single precision float?
-testpass = True
-p10_rng = 9 if (ll_type == 0 and ~is_64bit) else 11
-for i in range(0,p10_rng):
- digcnt = len(str(int(10.**i))) - 1;
- if i != digcnt:
- print('fail: 10.**%u was %u digits long' % (i, digcnt));
- testpass = False
-print("power of 10 test: %s" % (testpass and 'passed' or 'failed'))
-
-def fp2int_test(num, name, should_fail):
- try:
- x = int(num)
- passed = ~should_fail
- except:
- passed = should_fail
- print('%s: %s' % (name, passed and 'passed' or 'failed'))
-
-if ll_type != 2:
- if ll_type == 0:
- if is_64bit:
- neg_bad_fp = -1.00000005*2.**62.
- pos_bad_fp = 2.**62.
- neg_good_fp = -2.**62.
- pos_good_fp = 0.99999993*2.**62.
- else:
- neg_bad_fp = -1.00000005*2.**30.
- pos_bad_fp = 2.**30.
- neg_good_fp = -2.**30.
- pos_good_fp = 0.9999999499*2.**30.
- else:
- neg_bad_fp = -0.51*2.**64.
- pos_bad_fp = 2.**63.
- neg_good_fp = -2.**63.
- pos_good_fp = 1.9999998*2.**62.
-
- fp2int_test(neg_bad_fp, 'neg bad', True)
- fp2int_test(pos_bad_fp, 'pos bad', True)
- fp2int_test(neg_good_fp, 'neg good', False)
- fp2int_test(pos_good_fp, 'pos good', False)
-else:
- fp2int_test(-1.999999879*2.**127., 'large neg', False)
- fp2int_test(1.999999879*2.**127., 'large pos', False)
-
-fp2int_test(float('inf'), 'inf test', True)
-fp2int_test(float('nan'), 'NaN test', True)
-
-# test numbers < 1 (this used to fail; see issue #1044)
-fp2int_test(0.0001, 'small num', False)
-struct.pack('I', int(1/2))