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Merged revisions 65069 via svnmerge from 

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r65069 | eric.smith | 2008-07-17 13:48:39 -0400 (Thu, 17 Jul 2008) | 1 line

  Issue 3382: Make '%F' and float.__format__('F') convert results to upper case.
........
This commit is contained in:
Eric Smith 2008-07-17 18:30:48 +00:00
parent ddc5669fd9
commit a4fac36eb3
7 changed files with 44 additions and 18 deletions
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4
Doc/library/stdtypes.rst
View File

@ -1223,9 +1223,9 @@ The conversion types are:
+------------+-----------------------------------------------------+-------+
| ``'E'`` | Floating point exponential format (uppercase). | \(3) |
+------------+-----------------------------------------------------+-------+
| ``'f'`` | Floating point decimal format. | \(3) |
| ``'f'`` | Floating point decimal format (lowercase). | \(3) |
+------------+-----------------------------------------------------+-------+
| ``'F'`` | Floating point decimal format. | \(3) |
| ``'F'`` | Floating point decimal format (uppercase). | \(3) |
+------------+-----------------------------------------------------+-------+
| ``'g'`` | Floating point format. Uses lowercase exponential | \(4) |
| | format if exponent is less than -4 or not less than | |

7
Doc/library/string.rst
View File

@ -402,13 +402,14 @@ The available presentation types for floating point and decimal values are:
| ``'e'`` | Exponent notation. Prints the number in scientific |
| | notation using the letter 'e' to indicate the exponent. |
+---------+----------------------------------------------------------+
| ``'E'`` | Exponent notation. Same as ``'e'`` except it uses an |
| | upper case 'E' as the separator character. |
| ``'E'`` | Exponent notation. Same as ``'e'`` except it converts |
| | the number to upper case. |
+---------+----------------------------------------------------------+
| ``'f'`` | Fixed point. Displays the number as a fixed-point |
| | number. |
+---------+----------------------------------------------------------+
| ``'F'`` | Fixed point. Same as ``'f'``. |
| ``'F'`` | Fixed point. Same as ``'f'`` except it converts the |
| | number to upper case. |
+---------+----------------------------------------------------------+
| ``'g'`` | General format. This prints the number as a fixed-point |
| | number, unless the number is too large, in which case |

11
Lib/test/test_format.py
View File

@ -79,6 +79,17 @@ class FormatTest(unittest.TestCase):
testformat("%#.*f", (110, -1.e+100/3.))
testformat("%#.*F", (110, -1.e+100/3.))
overflowrequired = 0
# check for %f and %F
testformat("%f", (1.0,), "1.000000")
testformat("%F", (1.0,), "1.000000")
testformat("%f", (1e100,), "1e+100")
testformat("%F", (1e100,), "1E+100")
testformat("%f", (1e100,), "1e+100")
testformat("%F", (1e100,), "1E+100")
testformat("%f", (float('nan'),), "nan")
testformat("%F", (float('nan'),), "NAN")
testformat("%f", (float('inf'),), "inf")
testformat("%F", (float('inf'),), "INF")
# Formatting of integers. Overflow is not ok
overflowok = 0
testformat("%x", 10, "a")

12
Lib/test/test_types.py
View File

@ -514,9 +514,17 @@ class TypesTests(unittest.TestCase):
test( 1.0, '+f', '+1.000000')
test(-1.0, '+f', '-1.000000')
test(1.1234e90, 'f', '1.1234e+90')
test(1.1234e90, 'F', '1.1234e+90')
test(1.1234e90, 'F', '1.1234E+90')
test(1.1234e200, 'f', '1.1234e+200')
test(1.1234e200, 'F', '1.1234e+200')
test(1.1234e200, 'F', '1.1234E+200')
test(1e100, 'x<20f', '1e+100xxxxxxxxxxxxxx')
test(1e100, 'x<20F', '1E+100xxxxxxxxxxxxxx')
test(float('nan'), 'f', 'nan')
test(float('nan'), 'F', 'NAN')
test(float('inf'), 'f', 'inf')
test(float('inf'), 'F', 'INF')
test(float('-inf'), 'f', '-inf')
test(float('-inf'), 'F', '-INF')
test( 1.0, 'e', '1.000000e+00')
test(-1.0, 'e', '-1.000000e+00')

3
Misc/NEWS
View File

@ -12,6 +12,9 @@ What's new in Python 3.0b2?
Core and Builtins
-----------------
- Issue #3382: Make '%F' and float.__format__('F') convert results
to uppercase.
- Issue #3008: the float type has a new instance method 'float.hex'
and a new class method 'float.fromhex' to convert floating-point
numbers to and from hexadecimal strings, respectively.

12
Objects/stringlib/formatter.h
View File

@ -741,10 +741,6 @@ format_float_internal(PyObject *value,
/* first, do the conversion as 8-bit chars, using the platform's
snprintf. then, if needed, convert to unicode. */
/* 'F' is the same as 'f', per the PEP */
if (type == 'F')
type = 'f';
x = PyFloat_AsDouble(value);
if (x == -1.0 && PyErr_Occurred())
@ -758,8 +754,12 @@ format_float_internal(PyObject *value,
if (precision < 0)
precision = 6;
if (type == 'f' && (fabs(x) / 1e25) >= 1e25)
type = 'g';
if ((type == 'f' || type == 'F') && (fabs(x) / 1e25) >= 1e25) {
if (type == 'f')
type = 'g';
else
type = 'G';
}
/* cast "type", because if we're in unicode we need to pass a
8-bit char. this is safe, because we've restricted what "type"

13
Objects/unicodeobject.c
View File

@ -8588,8 +8588,12 @@ formatfloat(Py_UNICODE *buf,
return -1;
if (prec < 0)
prec = 6;
if (type == 'f' && (fabs(x) / 1e25) >= 1e25)
type = 'g';
if ((type == 'f' || type == 'F') && (fabs(x) / 1e25) >= 1e25) {
if (type == 'f')
type = 'g';
else
type = 'G';
}
/* Worst case length calc to ensure no buffer overrun:
'g' formats:
@ -8608,7 +8612,8 @@ formatfloat(Py_UNICODE *buf,
*/
if (((type == 'g' || type == 'G') &&
buflen <= (size_t)10 + (size_t)prec) ||
(type == 'f' && buflen <= (size_t)53 + (size_t)prec)) {
((type == 'f' || type == 'F') &&
buflen <= (size_t)53 + (size_t)prec)) {
PyErr_SetString(PyExc_OverflowError,
"formatted float is too long (precision too large?)");
return -1;
@ -9091,8 +9096,6 @@ PyObject *PyUnicode_Format(PyObject *format,
case 'F':
case 'g':
case 'G':
if (c == 'F')
c = 'f';
pbuf = formatbuf;
len = formatfloat(pbuf, sizeof(formatbuf)/sizeof(Py_UNICODE),
flags, prec, c, v);