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d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z e j j d „ ƒ Z d „ Z d „ Z d S( iÿÿÿÿNi ( t Timet TimeDeltat rtolg @iÌÿÿÿt atoli i i t formatt jdc C s‡ t d d d d d d ƒ} | t } | j | j k rI | j | j k sO t ‚ | t } | j | j k r} | j | j k sƒ t ‚ d S( s@ Check that an addition at the limit of precision (2^-52) is seeng €¼BAg à?R R t scalet utcN( R t dt_tinyt jd1t jd2t AssertionError( t tt t_dtt t2( ( s@ lib/python2.7/site-packages/astropy/time/tests/test_precision.pyt
test_addition s
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c C s\ d t } t d d d ƒ} | | d } | t d d d ƒ} t | j d ƒ sX t ‚ d S( s' Test precision with multiply and dividei g ˆÓ@R R g @g
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R ( t dt_smallt dt_bigt dt_big_small_by_6t dt_frac( ( s@ lib/python2.7/site-packages/astropy/time/tests/test_precision.pyt
test_mult_div s
c C s± t j d } t d d d ƒt } t d | d d ƒ} t | d d d ƒ} | j | j k se t ‚ | j | j k s} t ‚ | j | j k s• t ‚ | j | j k s t ‚ d S( sD Check that 3 ways of specifying a time + small offset are equivalentg õ@g èvH7BR t cxcsecN( R R
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Check that Time object really holds more precision than float64 by looking at the
(naively) summed 64-bit result and asserting equality at the bit level.
g ™¾
Check that precision holds through scale change (cxcsec is TT)g ð?R R g ™¾ s
c C sZ t d d d ƒ} t d d d ƒ} | | } t | j d d d d d ƒ sV t ‚ d
S( s% Check when initializing from ISO dates 2000:001:00:00:00.00000001R R s 3000:001:13:00:00.00000002g *@g 8@g:Œ0âŽyE>g õ@g ð?N( R R R
R ( R R t dt( ( s@ lib/python2.7/site-packages/astropy/time/tests/test_precision.pyt
test_iso_initH s
c C s{ t d d d ƒ} t j | j d ƒ | j d k s; t ‚ t d d d d d d ƒ} t j | j ƒ | j k sw t ‚ d S(
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Check that jd1 is a multiple of 0.5 (note the difference from when Time is created
with a format like 'jd' or 'cxcsec', where jd1 is a multiple of 1.0).
s 2000:001:00:00:00.00000001R R i gÞƒBÊÀó?gÜéÖÜ)ŒgAR R N( R t npt roundR R ( R ( ( s@ lib/python2.7/site-packages/astropy/time/tests/test_precision.pyt test_jd1_is_mult_of_half_or_oneP s )c C sg t d d d d d ƒ} t j | j ƒ | j k s9 t ‚ | j } t j | j ƒ | j k sc t ‚ d S( s½
Check precision when jd1 is negative. Currently fails because ERFA routines use a
test like jd1 > jd2 to decide which component to update. Should be
abs(jd1) > abs(jd2).
g¨ÿ¬ùjøÀR R R t ttN( R R$ R% R R R ( R t t1_tai( ( s@ lib/python2.7/site-packages/astropy/time/tests/test_precision.pyt test_precision_neg[ s ! c C st t t d d ƒ d d d d ƒ} t t d d ƒ d d d d ƒ} | | } t | j t j | j ƒ ƒ sp t ‚ d S( s‰
Check that input via epoch also has full precision, i.e., against
regression on https://github.com/astropy/astropy/pull/366
i¼ iÑ R t jyearR R R N( R t ranget allclose_sect secR$ R% R ( t t_utct t_taiR" ( ( s@ lib/python2.7/site-packages/astropy/time/tests/test_precision.pyt test_precision_epochh s !!
c C sR t d d g d d d d ƒj } t j | j t j d d g ƒ k ƒ sN t ‚ d S(
so Regression tests against #2083, where a leap second was rounded
incorrectly by the underlying ERFA routine.s 2012-06-30 23:59:59.413s 2012-07-01 00:00:00.413R t ut1t precisioni s 2012-06-30 23:59:60.000s 2012-07-01 00:00:00.000N( R R R$ t allt isot arrayR ( R ( ( s@ lib/python2.7/site-packages/astropy/time/tests/test_precision.pyt# test_leap_seconds_rounded_correctlys s g ° s&