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Number-grammar problems reported by Milo Arvidsson.
This commit is contained in:
Matthew Flatt 2012-08-10 15:36:25 -06:00
parent 3577b9d0eb
commit 7aec4f6c7e
1 changed files with 10 additions and 5 deletions
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15
collects/scribblings/reference/reader.scrbl
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@ -232,6 +232,11 @@ matches the @nonterm{general-number@sub{2}},
@nonterm{general-number@sub{8}}, @nonterm{general-number@sub{10}}, or
@nonterm{general-number@sub{16}} grammar, respectively.
A @litchar{#e} or @litchar{#i} followed immediately by @litchar{#b},
@litchar{#o}, @litchar{#d}, or @litchar{#x} is treated the same as the
reverse order: @litchar{#b}, @litchar{#o}, @litchar{#d}, or
@litchar{#x} followed by @litchar{#e} or @litchar{#i}.
An @nunterm{exponent-mark} in an inexact number serves both to specify
an exponent and to specify a numerical precision. If single-precision
IEEE floating point is supported (see @secref["numbers"]), the marks
@ -253,18 +258,18 @@ that the digit's actual value is unknown.
@nunterm{exact-complex})
(list @nunterm{exact-integer} @BNF-seq[@optional{@nonterm{sign}} @nunterm{unsigned-integer}])
(list @nunterm{unsigned-integer} @kleeneplus{@nunterm{digit}})
(list @nunterm{exact-rational} @BNF-seq[@nunterm{exact-integer} @litchar{/} @nunterm{unsigned-integer}])
(list @nunterm{exact-complex} @BNF-seq[@nunterm{exact-rational} @nonterm{sign} @nunterm{exact-rational} @litchar{i}])
(list @nunterm{exact-rational} @BNF-seq[@optional{@nonterm{sign}} @nunterm{unsigned-rational}])
(list @nunterm{unsigned-rational} @BNF-seq[@nunterm{unsigned-integer} @litchar{/} @nunterm{unsigned-integer}])
(list @nunterm{exact-complex} @BNF-seq[@nunterm{exact-rational} @nonterm{sign} @nunterm{unsigned-rational} @litchar{i}])
(list @nunterm{inexact} @BNF-alt[@nunterm{inexact-real}
@nunterm{inexact-complex}])
(list @nunterm{inexact-real} @BNF-seq[@optional{@nonterm{sign}} @nunterm{inexact-normal}]
@BNF-seq[@nonterm{sign} @nunterm{inexact-special}])
(list @nunterm{inexact-unsigned} @BNF-alt[@nunterm{inexact-normal}
@nunterm{inexact-special}])
(list @nunterm{inexact-normal} @BNF-seq[@nunterm{inexact-simple} @optional{@nunterm{exp-mark}
@optional[@nonterm{sign}] @nunterm{digits#}}])
(list @nunterm{inexact-normal} @BNF-seq[@nunterm{inexact-simple} @optional{@nunterm{exp-mark} @nunterm{exact-integer}}])
(list @nunterm{inexact-simple} @BNF-seq[@nunterm{digits#} @optional{@litchar{.}} @kleenestar{@litchar{#}}]
@BNF-seq[@optional{@nunterm{exact-integer}} @litchar{.} @nunterm{digits#}]
@BNF-seq[@optional{@nunterm{unsigned-integer}} @litchar{.} @nunterm{digits#}]
@BNF-seq[@nunterm{digits#} @litchar{/} @nunterm{digits#}])
(list @nunterm{inexact-special} @BNF-alt[@litchar{inf.0} @litchar{nan.0} @litchar{inf.f} @litchar{nan.f}])
(list @nunterm{digits#} @BNF-seq[@kleeneplus{@nunterm{digit}} @kleenestar{@litchar{#}}])