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author | 2019-06-09 09:11:21 +0200 | |
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committer | 2019-06-09 09:11:21 +0200 | |
commit | 0154ec71d597692a0d0682b19eac4b3adfb7f3dc (patch) | |
tree | 121b4ac35146f5696da090d3ae2534c76523e6c2 /arch/nds32/math-emu/fd2ui.c | |
parent | VMCI: Fixup atomic64_t abuse (diff) | |
parent | Linux 5.2-rc4 (diff) | |
download | linux-dev-0154ec71d597692a0d0682b19eac4b3adfb7f3dc.tar.xz linux-dev-0154ec71d597692a0d0682b19eac4b3adfb7f3dc.zip |
Merge 5.2-rc4 into char-misc-next
We want the char/misc driver fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/nds32/math-emu/fd2ui.c')
-rw-r--r-- | arch/nds32/math-emu/fd2ui.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/nds32/math-emu/fd2ui.c b/arch/nds32/math-emu/fd2ui.c new file mode 100644 index 000000000000..a0423b699aa4 --- /dev/null +++ b/arch/nds32/math-emu/fd2ui.c @@ -0,0 +1,30 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2005-2019 Andes Technology Corporation +#include <linux/uaccess.h> + +#include <asm/sfp-machine.h> +#include <math-emu/soft-fp.h> +#include <math-emu/double.h> + +void fd2ui(void *ft, void *fa) +{ + unsigned int r; + + FP_DECL_D(A); + FP_DECL_EX; + + FP_UNPACK_DP(A, fa); + + if (A_c == FP_CLS_INF) { + *(unsigned int *)ft = (A_s == 0) ? 0xffffffff : 0x00000000; + __FPU_FPCSR |= FP_EX_INVALID; + } else if (A_c == FP_CLS_NAN) { + *(unsigned int *)ft = 0xffffffff; + __FPU_FPCSR |= FP_EX_INVALID; + } else { + FP_TO_INT_ROUND_D(r, A, 32, 0); + __FPU_FPCSR |= FP_CUR_EXCEPTIONS; + *(unsigned int *)ft = r; + } + +} |