diff options
author | Guillaume Melquiond <guillaume.melquiond@inria.fr> | 2017-03-05 21:03:51 +0100 |
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committer | Maxime Dénès <mail@maximedenes.fr> | 2017-03-22 17:31:30 +0100 |
commit | e1ef9491edaf8f7e6f553c49b24163b7e2a53825 (patch) | |
tree | 08f89d143cfc92de4a4d7fe80aa13cb8d5137f20 /theories/Reals/Alembert.v | |
parent | a4a76c253474ac4ce523b70d0150ea5dcf546385 (diff) |
Change the parser and printer so that they use IZR for real constants.
There are two main issues. First, (-cst)%R is no longer syntactically
equal to (-(cst))%R (though they are still convertible). This breaks some
rewriting rules.
Second, the ring/field_simplify tactics did not know how to refold
real constants. This defect is no longer hidden by the pretty-printer,
which makes these tactics almost unusable on goals containing large
constants.
This commit also modifies the ring/field tactics so that real constant
reification is now constant time rather than linear.
Note that there is now a bit of code duplication between z_syntax and
r_syntax. This should be fixed once plugin interdependencies are supported.
Ideally the r_syntax plugin should just disappear by declaring IZR as a
coercion. Unfortunately the coercion mechanism is not powerful enough yet,
be it for parsing (need the ability for a scope to delegate constant
parsing to another scope) or printing (too many visible coercions left).
Diffstat (limited to 'theories/Reals/Alembert.v')
-rw-r--r-- | theories/Reals/Alembert.v | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/theories/Reals/Alembert.v b/theories/Reals/Alembert.v index a98d529fa..0e1608a32 100644 --- a/theories/Reals/Alembert.v +++ b/theories/Reals/Alembert.v @@ -78,7 +78,7 @@ Proof. ring. discrR. discrR. - pattern 1 at 3; replace 1 with (/ 1); + replace 1 with (/ 1); [ apply tech7; discrR | apply Rinv_1 ]. replace (An (S x)) with (An (S x + 0)%nat). apply (tech6 (fun i:nat => An (S x + i)%nat) (/ 2)). |