From f359e004b0ce4a5ac361f553c13e876123fd4ebb Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Wed, 5 Dec 2018 01:21:59 +0100 Subject: [PATCH] bc: make 2^1000000 interruptible faster Signed-off-by: Denys Vlasenko --- miscutils/bc.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/miscutils/bc.c b/miscutils/bc.c index 866fa3027..b392b05a3 100644 --- a/miscutils/bc.c +++ b/miscutils/bc.c @@ -2039,6 +2039,11 @@ static BcStatus bc_num_p(BcNum *a, BcNum *b, BcNum *restrict c, size_t scale) powrdx <<= 1; s = bc_num_mul(©, ©, ©, powrdx); if (s) goto err; + // It is too slow to handle ^C only after entire "2^1000000" completes + if (G_interrupt) { + s = BC_STATUS_FAILURE; + goto err; + } } bc_num_copy(c, ©); @@ -2054,6 +2059,11 @@ static BcStatus bc_num_p(BcNum *a, BcNum *b, BcNum *restrict c, size_t scale) s = bc_num_mul(c, ©, c, resrdx); if (s) goto err; } + // It is too slow to handle ^C only after entire "2^1000000" completes + if (G_interrupt) { + s = BC_STATUS_FAILURE; + goto err; + } } if (neg) { -- 2.25.1