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February 11, 2019 16:27
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NAN NAN you cant get the undefined float value man
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| install("inline")# not needed after the first time | |
| library("inline") | |
| nanBoom <- cfunction(c(dummy="ANY"),body=" | |
| fenv_t fenv; | |
| unsigned int new_excepts = FE_DIVBYZERO | FE_INVALID ; | |
| fegetenv(&fenv); | |
| fenv.__mxcsr &= ~(new_excepts << 7); | |
| fesetenv(&fenv); | |
| return dummy; | |
| ",includes="#include <fenv.h>",language="C") | |
| nanBoom(1) | |
| 0.0 /0.0# then R exits silently with SIGFPE and no error handling support |
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