* [Ada] Change rounding mode of 'Machine for static floating point
@ 2021-04-29 8:03 Pierre-Marie de Rodat
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From: Pierre-Marie de Rodat @ 2021-04-29 8:03 UTC (permalink / raw)
To: gcc-patches; +Cc: Eric Botcazou
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This changes the rounding mode used for the static evaluation of the
Machine attribute of floating-point types to the mode used for the
static evaluation of real expressions, for the sake of consistency.
Tested on x86_64-pc-linux-gnu, committed on trunk
gcc/ada/
* sem_attr.adb (Eval_Attribute) <Attribute_Machine>: Use
Round_Even instead of Round in the call to the Machine routine.
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diff --git a/gcc/ada/sem_attr.adb b/gcc/ada/sem_attr.adb
--- a/gcc/ada/sem_attr.adb
+++ b/gcc/ada/sem_attr.adb
@@ -9107,11 +9107,13 @@ package body Sem_Attr is
-- Machine --
-------------
+ -- We use the same rounding mode as the one used for RM 4.9(38)
+
when Attribute_Machine =>
Fold_Ureal
(N,
Eval_Fat.Machine
- (P_Base_Type, Expr_Value_R (E1), Eval_Fat.Round, N),
+ (P_Base_Type, Expr_Value_R (E1), Eval_Fat.Round_Even, N),
Static);
------------------
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2021-04-29 8:03 [Ada] Change rounding mode of 'Machine for static floating point Pierre-Marie de Rodat
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