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Paul Mackerras
f631dcd700
rcls_op being set to RCLS_TZERO was not detecting a zero result after rounding for a multiply result that underflows, because S still had low bits of the product. To fix this, remove the 's_nz = 0' from the RCLS_TZERO test. We can't then use this test in the FMADD_6 state, but we really shouldn't be testing for zero there, before rounding, so remove that. Also simplify FMADD_6 state by not setting rs_norm and going always to FINISH state rather than going to NORMALIZE state. Add a test for this case (actually a fmadd with B=0). While here, remove a pointless assignment to f_to_multiply.valid in MULT_1 state, since r.first is never set here. Signed-off-by: Paul Mackerras <paulus@ozlabs.org> |
1 month ago | |
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| Makefile | ||
| fpu.c | 1 month ago | |
| head.S | ||
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