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core: memq: Prepare for M2-Planet. 

* src/lib.c (memq): Prepare for M2-Planet.
This commit is contained in:
Jan Nieuwenhuizen 2019-10-24 21:23:38 +02:00
parent 1cb7e13d42
commit facc3a2af6
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GPG Key ID: F3C1A0D9C1D65273
1 changed files with 21 additions and 9 deletions
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30
src/lib.c
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@ -128,19 +128,31 @@ memq (SCM x, SCM a)
if (t == TCHAR || t == TNUMBER)
{
long v = VALUE (x);
while (a != cell_nil && v != VALUE (CAR (a)))
a = CDR (a);
while (a != cell_nil)
{
if (v == VALUE (CAR (a)))
return a;
a = CDR (a);
}
return cell_f;
}
else if (t == TKEYWORD)
if (t == TKEYWORD)
{
while (a != cell_nil && (TYPE (CAR (a)) != TKEYWORD || string_equal_p (x, CAR (a)) == cell_f))
a = CDR (a);
while (a != cell_nil)
{
if (TYPE (CAR (a)) == TKEYWORD)
if (string_equal_p (x, CAR (a)) == cell_t)
return a;
a = CDR (a);
}
return cell_f;
}
else
while (a != cell_nil && x != CAR (a))
while (a != cell_nil)
{
if (x == CAR (a))
return a;
a = CDR (a);
if (a != cell_nil)
return a;
}
return cell_f;
}