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# See LICENSE for license details.
#*****************************************************************************
# recoding.S
#-----------------------------------------------------------------------------
#
# Test corner cases of John Hauser's microarchitectural recoding scheme.
# There are twice as many recoded values as IEEE-754 values; some of these
# extras are redundant (e.g. Inf) and others are illegal (subnormals with
# too many bits set).
#
#include "riscv_test.h"
#include "test_macros.h"
RVTEST_RV64UF
RVTEST_CODE_BEGIN
# Make sure infinities with different mantissas compare as equal.
flw f0, minf, a0
flw f1, three, a0
fmul.s f1, f1, f0
TEST_CASE( 2, a0, 1, feq.s a0, f0, f1)
TEST_CASE( 3, a0, 1, fle.s a0, f0, f1)
TEST_CASE( 4, a0, 0, flt.s a0, f0, f1)
# Likewise, but for zeroes.
fcvt.s.w f0, x0
li a0, 1
fcvt.s.w f1, a0
fmul.s f1, f1, f0
TEST_CASE(5, a0, 1, feq.s a0, f0, f1)
TEST_CASE(6, a0, 1, fle.s a0, f0, f1)
TEST_CASE(7, a0, 0, flt.s a0, f0, f1)
TEST_PASSFAIL
RVTEST_CODE_END
.data
RVTEST_DATA_BEGIN
minf: .float -Inf
three: .float 3.0
RVTEST_DATA_END
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