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Parse floats using integers (64 bits) only.

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The algorithm is close to what the reference version is doing.
This commit is contained in:
Olaf Seibert
2022-06-19 14:56:14 +02:00
parent bb56fc33f1
commit 3109f40bd5
3 changed files with 315 additions and 53 deletions
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10
tests/test-float.mac
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@@ -82,16 +82,16 @@
; V05.06
.word ^F 0.994140625 ; (2**9-3)/2**9 040176 040177
.flt4 0.994140625
.flt4 0.994140625 ; same-> 040176 100000 0 0
.word ^F 0.998046875 ; (2**9-1)/2**9 040177 040200
.flt4 0.998046875
.flt4 0.998046875 ; same-> 040177 100000 0 0
.word ^F 1.00390625 ; (2**8+1)/2**8 040200 040201
.flt4 1.00390625
.flt4 1.00390625 ; same-> 040200 100000 0 0
.word ^F 1.01171875 ; (2**8+3)/2**8 040201 040202
.flt4 1.01171875
.flt4 1.01171875 ; same-> 040201 100000 0 0
.flt4 1.701411834604692307e+38 ; 077777 177777 177777 177777
.FLT4 170141183460469230551095682998472802304 ; 2**127-2**70
@@ -127,7 +127,7 @@ f2 = %2
subf #^D<1+1>,ac0 ; literally
subf #^D 1+1 ,ac0 ; literally
subf #1e3,ac0 ; as float
subf #1e 3,ac0 ; TODO: accepted by MACRO11 as 1E3 (but not 1 e3, 1 e 3)
subf #1e 3,ac0 ; accepted by MACRO11 as 1E3 (but not 1 e3, 1 e 3)
a = 1
e3 = 3
subf #a,ac0 ; a interpreted as bit pattern