s390x: simplify ceil/floor code #246
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The previous change[1] to this code left quite a bit of dead code behind, when it switched vm_round from using DIDBR (divide to integer) to FIDBR (load floating-point integer). Simplify the code by removing the remains of the previous implementation. As a side effect, math.ceil() etc. now execute without crashing in QEMU, which was previously not the case because QEMU doesn't implement DIDBR. [1]: openresty#177
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The previous change1 to this code left quite a bit of dead code behind, when it switched vm_round from using DIDBR (divide to integer) to FIDBR (load floating-point integer). Simplify the code by removing the remains of the previous implementation.
As a side effect, math.ceil() etc. now execute without crashing in QEMU, which was previously not the case because QEMU doesn't implement DIDBR.