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-rw-r--r--src/algebra/plot3d.spad.pamphlet6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/algebra/plot3d.spad.pamphlet b/src/algebra/plot3d.spad.pamphlet
index faf926ad..658b3a32 100644
--- a/src/algebra/plot3d.spad.pamphlet
+++ b/src/algebra/plot3d.spad.pamphlet
@@ -192,11 +192,11 @@ Plot3D(): Exports == Implementation where
select(l,f,g) ==
m := f first l
- if (EQL(m, _$NaNvalue$Lisp)$Lisp) then m := 0
+ if (EQL(m, quietDoubleNaN()$Lisp)$Lisp) then m := 0
-- for p in rest l repeat m := g(m,fp)
for p in rest l repeat
fp : F := f p
- if (EQL(fp, _$NaNvalue$Lisp)$Lisp) then fp := 0
+ if (EQL(fp, quietDoubleNaN()$Lisp)$Lisp) then fp := 0
m := g(m,fp)
m
@@ -447,7 +447,7 @@ Plot3D(): Exports == Implementation where
myTrap(ff:F-> F, f:F):F ==
s := trapNumericErrors(ff(f))$Lisp :: Union(F, "failed")
if (s) case "failed" then
- r:F := _$NaNvalue$Lisp
+ r:F := quietDoubleNaN()$Lisp
else
r:F := s
r