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Fix floating point parsing.

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Not completely finished, but it can parse numbers not in the range
(-1,1)
This commit is contained in:
Jared Hance 2014-06-04 13:56:09 -04:00
parent 5f979c9346
commit 1fde43b3d5
1 changed files with 26 additions and 19 deletions
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45
arvo/hoon.hoon
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@ -1167,11 +1167,11 @@
++ rlyh |=(reh=@rh ~|(%real-nyet ^-([s=? h=@ f=@] !!)))
++ rlyq |=(req=@rq ~|(%real-nyet ^-([s=? h=@ f=@] !!)))
++ rlys |=(res=@rs ~|(%real-nyet ^-([s=? h=@ f=@] !!)))
++ ryld |= v=[syn=? hol=@ fac=@] ^- @rd !:
++ ryld |= v=[syn=? hol=@ zer=@ fac=@] ^- @rd !:
(bit:rd (cof:fl 52 v))
++ rylh |=([syn=? hol=@ fac=@] ~|(%real-nyet ^-(@rh !!)))
++ rylq |=([syn=? hol=@ fac=@] ~|(%real-nyet ^-(@rq !!)))
++ ryls |=([syn=? hol=@ fac=@] ~|(%real-nyet ^-(@rs !!)))
++ rylh |=([syn=? hol=@ zer=@ fac=@] ~|(%real-nyet ^-(@rh !!)))
++ rylq |=([syn=? hol=@ zer=@ fac=@] ~|(%real-nyet ^-(@rq !!)))
++ ryls |=([syn=? hol=@ zer=@ fac=@] ~|(%real-nyet ^-(@rs !!)))
:: Floating point operations for general floating points.
:: Not really needed, since the actual floating point operations
@ -1201,12 +1201,18 @@
$(c (^mul c a), b (^add b 1))
:: convert from sign/whole/frac -> sign/exp/ari w/ precision p, bias b
++ cof |= [p=@u s=? h=@u f=@u] ^- [s=? e=@s a=@u]
=+ b=(fra p f)
=+ e=(dif:si (sun:si (xeb h)) (sun:si 1))
=+ a=(lia p (mix (lsh 0 p h) b))
[s=s e=e a=a]
++ cof |= [p=@u s=? h=@u z=@ f=@u] ^- [s=? e=@s a=@u]
?: &(=(0 h) =(0 f))
~| %zero-pars
!!
?: &(=(0 h))
~| %small-pars
!!
=+ b=(fra p z f) :: p-bits
=+ a=(mix b (lsh 0 p h))
=+ e=(dif:si (sun:si (met 0 a)) (sun:si +(p)))
[s=s e=e a=(lia p a)]
:: convert from sign/exp/ari -> sign/whole/frac w/ precision q
++ cog |= [q=@u s=? e=@s a=@u] ^- [s=? h=@u f=@u]
::?: =(e -0)
@ -1224,13 +1230,12 @@
(^add 1 $(f (^div f 10)))
:: Denominator of fraction, f is base 10
++ den |= f=@u ^- @u
(bey 10 (dcl f) 0 1)
++ den |= [f=@u z=@u] ^- @u
(bey 10 (^add z (dcl f)) 0 1)
:: Binary fraction of precision p (ex, for doubles, p=52)
++ fra |= [p=@u f=@u] ^- @u
=+ d=(den f)
(^div (lsh 0 p f) d)
++ fra |= [p=@u z=@u f=@u] ^- @u
(^div (lsh 0 p f) (den f z))
:: Decimal fraction of precision q [for printing only]
++ fre |= [q=@u a=@u] ^- @u
@ -1349,8 +1354,8 @@
++ bit |= a=[s=? e=@s a=@u]
=+ a2=(lia:fl 52 a.a)
=+ b=(ira:fl a2)
=+ c=(lsh 0 (^sub 52 (met 0 b)) b)
(can 0 [[52 c] [[11 (abs:si (sum:si (sun:si 1.023) e.a))] [[1 `@`s.a] ~]]])
::=+ c=(lsh 0 (^sub 52 (met 0 b)) b)
(can 0 [[52 b] [[11 (abs:si (sum:si (sun:si 1.023) e.a))] [[1 `@`s.a] ~]]])
:: Sign of an @rd
++ sig |= [a=@rd] ^- ?
=(0 (rsh 0 63 a))
@ -3208,11 +3213,13 @@
(stag ~ zust)
(stag %many (ifix [cab ;~(plug cab cab)] (more cab nusk)))
==
++ royl
++ royl !:
=+ ^= zer
(cook lent (star (just '0')))
=+ ^= vox
;~ plug
;~(pose (cold | hep) (easy &))
;~(plug dim:ag ;~(pose ;~(pfix dot dim:ag) (easy 0)))
;~(plug dim:ag ;~(pose ;~(pfix dot ;~(plug zer dim:ag)) (easy [0 0])))
==
;~ pose
(stag %rh (cook rylh ;~(pfix ;~(plug sig sig) vox)))