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19 lines
649 B
C
19 lines
649 B
C
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#include <fenv.h>
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/* 7.6.4.2
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The feholdexcept function saves the current floating-point
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environment in the object pointed to by envp, clears the exception
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flags, and then installs a non-stop (continue on exceptions) mode,
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if available, for all exceptions. */
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int feholdexcept (fenv_t * envp)
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{
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fenv_t tmp_env;
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__asm__ ("fnstenv %0;" : "=m" (* envp)); /* save current into envp */
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tmp_env = * envp;
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tmp_env.__status_word &= ~FE_ALL_EXCEPT; /* clear exception flags */
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tmp_env.__control_word |= FE_ALL_EXCEPT; /* set cw to non-stop */
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__asm__ volatile ("fldenv %0;" : : "m" (tmp_env)); /* install the copy */
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return 0;
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}
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