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bc: shrink internal library more

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function                                             old     new   delta
bc_lib                                              1618    1609      -9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2018-12-14 09:53:50 +01:00
parent 3ac0c21a1f
commit 203210e253
1 changed files with 8 additions and 2 deletions
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10
miscutils/bc.c
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@ -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"