2bb93784c6
zig can now cross compile hello.c targeting windows
57 lines
2.0 KiB
C
57 lines
2.0 KiB
C
/**
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* This file has no copyright assigned and is placed in the Public Domain.
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* This file is part of the mingw-w64 runtime package.
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* No warranty is given; refer to the file DISCLAIMER.PD within this package.
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*/
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#include <fenv.h>
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#if !(defined(_ARM_) || defined(__arm__) || defined(_ARM64_) || defined(__aarch64__))
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extern int __mingw_has_sse (void);
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#endif /* !(defined(_ARM_) || defined(__arm__) || defined(_ARM64_) || defined(__aarch64__)) */
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/* 7.6.2.4
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The fesetexceptflag function sets the complete status for those
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exception flags indicated by the argument excepts, according to the
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representation in the object pointed to by flagp. The value of
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*flagp shall have been set by a previous call to fegetexceptflag
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whose second argument represented at least those exceptions
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represented by the argument excepts. This function does not raise
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exceptions, but only sets the state of the flags. */
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int fesetexceptflag (const fexcept_t * flagp, int excepts)
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{
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fenv_t _env;
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excepts &= FE_ALL_EXCEPT;
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#if defined(_ARM_) || defined(__arm__)
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__asm__ volatile ("fmrx %0, FPSCR" : "=r" (_env));
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_env.__cw &= ~excepts;
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_env.__cw |= (*flagp & excepts);
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__asm__ volatile ("fmxr FPSCR, %0" : : "r" (_env));
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#elif defined(_ARM64_) || defined(__aarch64__)
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unsigned __int64 fpcr;
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(void) _env;
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__asm__ volatile ("mrs %0, fpcr" : "=r" (fpcr));
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fpcr &= ~excepts;
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fpcr |= (*flagp & excepts);
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__asm__ volatile ("msr fpcr, %0" : : "r" (fpcr));
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#else
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__asm__ volatile ("fnstenv %0;" : "=m" (_env));
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_env.__status_word &= ~excepts;
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_env.__status_word |= (*flagp & excepts);
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__asm__ volatile ("fldenv %0;" : : "m" (_env));
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if (__mingw_has_sse ())
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{
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int sse_cw;
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__asm__ volatile ("stmxcsr %0;" : "=m" (sse_cw));
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sse_cw &= ~(excepts << 7);
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sse_cw |= ((*flagp & excepts) << 7);
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__asm__ volatile ("ldmxcsr %0" : : "m" (sse_cw));
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}
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#endif /* defined(_ARM_) || defined(__arm__) || defined(_ARM64_) || defined(__aarch64__) */
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return 0;
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}
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