diff options
Diffstat (limited to 'lib/pure/math.nim')
| -rw-r--r-- | lib/pure/math.nim | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/lib/pure/math.nim b/lib/pure/math.nim index 5f3240e00..9e590debc 100644 --- a/lib/pure/math.nim +++ b/lib/pure/math.nim @@ -41,7 +41,7 @@ proc fac*(n: int): int = createFactTable[13]() else: createFactTable[21]() - assert(n > 0, $n & " must not be negative.") + assert(n >= 0, $n & " must not be negative.") assert(n < factTable.len, $n & " is too large to look up in the table") factTable[n] @@ -560,3 +560,14 @@ when isMainModule: assert sgn(Inf) == 1 assert sgn(NaN) == 0 + block: # fac() tests + try: + discard fac(-1) + except AssertionError: + discard + + doAssert fac(0) == 1 + doAssert fac(1) == 1 + doAssert fac(2) == 2 + doAssert fac(3) == 6 + doAssert fac(4) == 24 |