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authormbkma <[email protected]>2020-08-26 20:19:31 +0200
committerraveit65 <[email protected]>2020-09-04 18:26:07 +0200
commit81aa78009bcb2bc07abfb6cd3953e24ae3979dd8 (patch)
tree079719b8d6d671830d4efe1796562e3df55d6440
parentc7658b5a7c5ecbabb3390844f19ba43626825554 (diff)
downloadmate-calc-master.tar.bz2
mate-calc-master.tar.xz
fix calulation of x^q, where 1/q is a negative integerHEADmaster
-rw-r--r--src/mp.c2
-rw-r--r--src/test-mp-equation.c1
2 files changed, 3 insertions, 0 deletions
diff --git a/src/mp.c b/src/mp.c
index 30f69f4..7b224c6 100644
--- a/src/mp.c
+++ b/src/mp.c
@@ -435,6 +435,8 @@ mp_root(const MPNumber *x, int64_t n, MPNumber *z)
if (n < 0)
{
+ mpc_ui_div(z->num, 1, x->num, MPC_RNDNN);
+
if (n == INT64_MIN)
p = (uint64_t) INT64_MAX + 1;
else
diff --git a/src/test-mp-equation.c b/src/test-mp-equation.c
index adf6c06..3e1d993 100644
--- a/src/test-mp-equation.c
+++ b/src/test-mp-equation.c
@@ -476,6 +476,7 @@ test_equations(void)
test("2^0.5", "1.414213562", 0);
test("₃√−8", "−2", 0);
test("(−8)^(1÷3)", "−2", 0);
+ test("e^-2^-5", "0.969233234", 0);
test("0 mod 7", "0", 0);
test("6 mod 7", "6", 0);