[software] Fix floating point testing applications #1172

Job	Run time
check-opcodes	3s
riscv-isa-sim	9s
tc-llvm	4m 3s
tc-gcc	1m 47s
verilator	13s
verilator-model (minpool)	4m 59s
verilator-model (mempool)	11m 9s
build-apps-gcc (minpool)	38s
check-bootrom	16s
build-apps-gcc (mempool)	35s
build-apps-omp (minpool)	42s
build-apps-omp (mempool)	33s
tc-halide	53s
build-apps-llvm (minpool)	1m 22s
build-apps-llvm (mempool)	1m 31s
build-apps-halide	0s
unit-test	2m 34s
run-apps-llvm (minpool)	28s
run-apps-gcc	0s
run-apps-llvm (mempool)	4m 22s
run-apps-halide	0s
clean-up	2s
clean-up-compile-runs (minpool)	4s
clean-up-compile-runs (mempool)	2s
	36m 25s

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