ó ÐEe]c @`s;dZddlmZmZmZddgZddlZddlmZddl m Z dd l m Z dd l m Zdd l mZmZdd lmZmZdd l mZd„Zd„Zdefd„ƒYZiejej6ejej6ejej6ZdZie dej!dddej"dƒƒej#6e dej$dddej"dƒƒej6e dej%dddej"dƒƒej&6e dej'dddej"dƒƒej(6Z)iZ*d„Z+iZ,d„Z-d „Z.d!„Z/e d"ƒdefd#„ƒYƒZ0e d"ƒdefd$„ƒYƒZ1dS(%sJMachine limits for Float32 and Float64 and (long double) if available... i(tdivisiontabsolute_importtprint_functiontfinfotiinfoNi(tMachAr(t set_module(tnumeric(t numerictypes(tarraytinf(tlog10texp2(tumathcC`s+|jdkr'|jƒ}d|_n|S(sfix rank-0 --> rank-1ii(i(tndimtcopytshape(ta((s3lib/python2.7/site-packages/numpy/core/getlimits.pyt_fr0s  cC`s+|jdkr'|jƒ}d|_n|S(sfix rank > 0 --> rank-0i((tsizeRR(R((s3lib/python2.7/site-packages/numpy/core/getlimits.pyt_fr1s  t MachArLikecB`seZdZd„ZRS(s$ Object to simulate MachAr instance c `s|tˆ‰‡fd†‰‡fd†}‡‡fd†}ˆd|_||jdƒƒ|_|_||jdƒƒ|_||jdƒƒ|_|_||jdƒƒ|_|_ ˆd |jd ƒƒ|_ |j j |ƒt t|jƒ ƒ|_|ˆd ƒ|j ƒ|_||jƒ|_||jƒ|_||jƒ|_||jƒ|_||jƒ|_dS( Nc`st|gˆƒS(N(R (tv(tftype(s3lib/python2.7/site-packages/numpy/core/getlimits.pyt)tc`stˆ|ƒƒS(N(R(R(t float_conv(s3lib/python2.7/site-packages/numpy/core/getlimits.pyR*Rc`sˆdtt|ƒdˆƒS(Ntfmti(R R(R(Rtparams(s3lib/python2.7/site-packages/numpy/core/getlimits.pyR+Rttitletepstepsnegthugettinytitypetibetai (t_MACHAR_PARAMSRtpoptepsilonRRtxmaxR txminR!R#t__dict__tupdatetintR t precisiont resolutiont_str_epst _str_epsnegt _str_xmint _str_xmaxt_str_resolution(tselfRtkwargstfloat_to_floatt float_to_str((RRRs3lib/python2.7/site-packages/numpy/core/getlimits.pyt__init__%s$  (t__name__t __module__t__doc__R7(((s3lib/python2.7/site-packages/numpy/core/getlimits.pyR"ss(numpy {} precision floating point numberR"Rs%24.16eRtdoubles%15.7etsingles%ss long doubles%12.5ethalfcC`s|t|dd?dd&dd'd d@d d)d ddd dddt|d>ƒƒdt|d?ƒƒd|dt|d&ƒƒƒ }t|dAƒt|dBƒ|tdCl g RNRStwarningstwarntformatt UserWarningt_discovered_machar(RRtkeytma_like((s3lib/python2.7/site-packages/numpy/core/getlimits.pyt _get_macharïs    c`sKtˆ‰t‡fd†‡fd†‡fd†‡‡fd†ˆdƒS(sB Create MachAr instance with found information on float types c`st|gˆƒS(N(R (R(R(s3lib/python2.7/site-packages/numpy/core/getlimits.pyRRc`st|jˆdƒƒdS(NR"i(Rtastype(R(R(s3lib/python2.7/site-packages/numpy/core/getlimits.pyRRc`stt|ƒdˆƒS(Ni(R R(R(R(s3lib/python2.7/site-packages/numpy/core/getlimits.pyR Rc`sˆdtt|ƒdˆƒS(NRi(R R(R(RR(s3lib/python2.7/site-packages/numpy/core/getlimits.pyR!RR(R$R(R((RRs3lib/python2.7/site-packages/numpy/core/getlimits.pyRvs    tnumpycB`s8eZdZiZd„Zd„Zd„Zd„ZRS(sn finfo(dtype) Machine limits for floating point types. Attributes ---------- bits : int The number of bits occupied by the type. eps : float The smallest representable positive number such that ``1.0 + eps != 1.0``. Type of `eps` is an appropriate floating point type. epsneg : floating point number of the appropriate type The smallest representable positive number such that ``1.0 - epsneg != 1.0``. iexp : int The number of bits in the exponent portion of the floating point representation. machar : MachAr The object which calculated these parameters and holds more detailed information. machep : int The exponent that yields `eps`. max : floating point number of the appropriate type The largest representable number. maxexp : int The smallest positive power of the base (2) that causes overflow. min : floating point number of the appropriate type The smallest representable number, typically ``-max``. minexp : int The most negative power of the base (2) consistent with there being no leading 0's in the mantissa. negep : int The exponent that yields `epsneg`. nexp : int The number of bits in the exponent including its sign and bias. nmant : int The number of bits in the mantissa. precision : int The approximate number of decimal digits to which this kind of float is precise. resolution : floating point number of the appropriate type The approximate decimal resolution of this type, i.e., ``10**-precision``. tiny : float The smallest positive usable number. Type of `tiny` is an appropriate floating point type. Parameters ---------- dtype : float, dtype, or instance Kind of floating point data-type about which to get information. See Also -------- MachAr : The implementation of the tests that produce this information. iinfo : The equivalent for integer data types. Notes ----- For developers of NumPy: do not instantiate this at the module level. The initial calculation of these parameters is expensive and negatively impacts import times. These objects are cached, so calling ``finfo()`` repeatedly inside your functions is not a problem. cC`s…ytj|ƒ}Wn&tk r;tjt|ƒƒ}nX|jj|dƒ}|dk ra|S|g}tj|ƒ}||k r›|j|ƒ|}nt |tj ƒsÀt d|ƒ‚n|jj|dƒ}|dk rå|St |tj ƒs&t |}||k r&|j|ƒ|}q&n|jj|dƒ}|dk rK|Stj|ƒj|ƒ}x|D]}||j|>> ii16 = np.iinfo(np.int16) >>> ii16.min -32768 >>> ii16.max 32767 >>> ii32 = np.iinfo(np.int32) >>> ii32.min -2147483648 >>> ii32.max 2147483647 With instances: >>> ii32 = np.iinfo(np.int32(10)) >>> ii32.min -2147483648 >>> ii32.max 2147483647 cC`s©ytj|ƒ|_Wn)tk rAtjt|ƒƒ|_nX|jj|_|jjd|_d|j|jf|_|jdkr¥td|jfƒ‚ndS(Nis%s%dtiusInvalid integer data type %r.( RR|R}R~tkindR‘R’RwRn(R3tint_type((s3lib/python2.7/site-packages/numpy/core/getlimits.pyR7ñs cC`sk|jdkrdSytj|j}Wn9tk rbtd|jd> ƒ}|tj|jdƒ}ntd|jd>dƒ}|tj|jRARPRiRyRvRR(((s3lib/python2.7/site-packages/numpy/core/getlimits.pytsZ            + –