From 08189431706298d599cffea2e41dd51290305ba3 Mon Sep 17 00:00:00 2001
From: Hugo Herbelin
Date: Fri, 31 Jan 2020 13:36:34 +0100
Subject: Centralizing all kinds of numeral string management in numTok.ml.

Four types of numerals are introduced:
- positive natural numbers (may include "_", e.g. to separate thousands, and leading 0)
- integer numbers (may start with a minus sign)
- positive numbers with mantisse and signed exponent
- signed numbers with mantisse and signed exponent

In passing, we clarify that the lexer parses only positive numerals,
but the numeral interpreters may accept signed numerals.

Several improvements and fixes come from Pierre Roux. See
https://github.com/coq/coq/pull/11703 for details. Thanks to him.
---
 plugins/syntax/float_syntax.ml | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

(limited to 'plugins/syntax/float_syntax.ml')

diff --git a/plugins/syntax/float_syntax.ml b/plugins/syntax/float_syntax.ml
index 23d4d63228..dadce9a9ea 100644
--- a/plugins/syntax/float_syntax.ml
+++ b/plugins/syntax/float_syntax.ml
@@ -22,9 +22,8 @@ let make_path dir id = Libnames.make_path (make_dir dir) (Id.of_string id)
 
 (*** Parsing for float in digital notation ***)
 
-let interp_float ?loc (sign,n) =
-  let sign = Constrexpr.(match sign with SPlus -> "" | SMinus -> "-") in
-  DAst.make ?loc (GFloat (Float64.of_string (sign ^ NumTok.to_string n)))
+let interp_float ?loc n =
+  DAst.make ?loc (GFloat (Float64.of_string (NumTok.Signed.to_string n)))
 
 (* Pretty printing is already handled in constrextern.ml *)
 
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