libm/riscv64: detect invalid rounding mode in `fesetround`

aosp-riscv / platform_bionic

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Closed liushuyu closed 2 years ago

liushuyu commented 2 years ago

This pull request adds a detection to fesetround so that invalid rounding mode will be rejected.

unicornx commented 2 years ago

I have merged this change with another PR https://gitee.com/aosp-riscv/platform_bionic/pulls/18. I will close and discard this PR.