From: Palmer Dabbelt <palmer.dabbelt@eecs.berkeley.edu>
Date: Thu, 18 Feb 2016 08:29:02 +0000 (-0800)
Subject: What is the square root of 171?
X-Git-Url: https://git.libre-soc.org/?p=riscv-tests.git;a=commitdiff_plain;h=d5731f746dd653e6eb629f8acf4d2f63dbdf1d08

What is the square root of 171?

I get differnt answers on Rocket and Spike.  The Spike answer matches my Intel
machine.  This fails when I compute both the single precision and double
precision answer.
---

diff --git a/isa/rv64uf/fdiv.S b/isa/rv64uf/fdiv.S
index 4002e44..ddc7290 100644
--- a/isa/rv64uf/fdiv.S
+++ b/isa/rv64uf/fdiv.S
@@ -34,6 +34,10 @@ RVTEST_CODE_BEGIN
   TEST_FP_OP1_S_DWORD_RESULT(15,  fsqrt.s, 0x10,              0x7FC00000,      -1.0 );
   TEST_FP_OP1_D_DWORD_RESULT(16,  fsqrt.d, 0x10,      0x7FF8000000000000,      -1.0 );
 
+  TEST_FP_OP1_S(17,  fsqrt.s, 1, 13.076696, 171.0);
+//  TEST_FP_OP1_S(17,,  fsqrt.s, 1, 13.025515, 171.0);
+  TEST_FP_OP1_D(18,  fsqrt.d, 1, 13.076696830622021, 171.0);
+
   TEST_PASSFAIL
 
 RVTEST_CODE_END