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author | Andrés M <andmarti1424@users.noreply.github.com> | 2021-02-26 16:02:05 -0300 |
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committer | GitHub <noreply@github.com> | 2021-02-26 16:02:05 -0300 |
commit | 680ea2379f068a8dfc0b6304b21f222adbcae755 (patch) | |
tree | e2e8b75a37d7fac5b0689058241a194a0856f9f8 /src/interp.c | |
parent | ceda9c89520768818439ffafd80df564384eb243 (diff) | |
parent | f5bc0daa807c128b853656f9d8b2d7789e4ef262 (diff) |
Merge pull request #472 from Epicalert/freeze
Add factorial function
Diffstat (limited to 'src/interp.c')
-rw-r--r-- | src/interp.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/interp.c b/src/interp.c index a64d3fc..eb924fc 100644 --- a/src/interp.c +++ b/src/interp.c @@ -1299,6 +1299,14 @@ double eval(register struct ent * ent, register struct enode * e) { case MAGENTA: return ((double) COLOR_MAGENTA); case CYAN: return ((double) COLOR_CYAN); case WHITE: return ((double) COLOR_WHITE); + case FACT: + { + double total = eval(ent, e->e.o.left); + for (int i = eval(ent, e->e.o.left) - 1; i > 0; i--) { + total *= i; + } + return total > 0 ? total : 1; + } default: sc_error ("Illegal numeric expression"); exprerr = 1; } @@ -3060,6 +3068,7 @@ void decompile(register struct enode *e, int priority) { for (s = "@default_color"; (line[linelim++] = *s++); ); linelim--; break; + case FACT: one_arg("@fact(", e); break; default: decompile(e->e.o.left, mypriority); line[linelim++] = e->op; |