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-rw-r--r--miscutils/bc.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/miscutils/bc.c b/miscutils/bc.c
index 0a2da6cf8..8befc8e3f 100644
--- a/miscutils/bc.c
+++ b/miscutils/bc.c
@@ -7143,6 +7143,12 @@ static const char bc_lib[] ALIGN1 = {
"scale=20"
"\n" "define e(x){"
"\n" "auto b,s,n,r,d,i,p,f,v"
+////////////////"if(x<0)return(1/e(-x))" // and drop 'n' and x<0 logic below
+//^^^^^^^^^^^^^^^^ this would work, and is even more precise than GNU bc:
+//e(-.998896): GNU:.36828580434569428695
+// above code:.36828580434569428696
+// actual value:.3682858043456942869594...
+// but for now let's be "GNU compatible"
"\n" "b=ibase"
"\n" "ibase=A"
"\n" "if(x<0){"
@@ -7219,7 +7225,7 @@ static const char bc_lib[] ALIGN1 = {
"\n" "}"
"\n" "scale=0"
"\n" "q=(x/a+2)/4"
-"\n" "x=x-4*q*a"
+"\n" "x-=4*q*a"
"\n" "if(q%2)x=-x"
"\n" "scale=s+2"
"\n" "r=a=x"
@@ -7288,7 +7294,7 @@ static const char bc_lib[] ALIGN1 = {
"\n" "n/=1"
"\n" "if(n<0){"
"\n" "n=-n"
-"\n" "if(n%2==1)o=1"
+"\n" "o=n%2"
"\n" "}"
"\n" "a=1"
"\n" "for(i=2;i<=n;++i)a*=i"