From cc7dfa82705b64d1cf43408244ef6c7dd930a6e9 Mon Sep 17 00:00:00 2001
From: Guillaume Bertholon
Date: Thu, 19 Jul 2018 13:33:17 +0200
Subject: Add primitive floats to 'vm_compute'

* This commit add float instructions to the VM, their encoding in bytecode
  and the interpretation of primitive float values after the reduction.

* The flag '-std=c99' could be added to the C compiler flags to ensure
  that float computation strictly follows the norm (ie. i387 80-bits
  format is not used as an optimization).

  Actually, we use '-fexcess-precision=standard' instead of '-std=c99'
  because the latter would disable GNU asm used in the VM.
---
 dev/vm_printers.ml | 1 +
 1 file changed, 1 insertion(+)

(limited to 'dev/vm_printers.ml')

diff --git a/dev/vm_printers.ml b/dev/vm_printers.ml
index 863d930968..11565b99eb 100644
--- a/dev/vm_printers.ml
+++ b/dev/vm_printers.ml
@@ -84,6 +84,7 @@ and ppwhd whd =
   | Vconstr_const i -> print_string "C(";print_int i;print_string")"
   | Vconstr_block b -> ppvblock b
   | Vint64 i -> printf "int64(%LiL)" i
+  | Vfloat64 f -> printf "float64(%.17g)" f
   | Vatom_stk(a,s) ->
       open_hbox();ppatom a;close_box();
       print_string"@";ppstack s
-- 
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