third_party/ulib/musl/src/fenv/__flt_rounds.c

#include <fenv.h>
#include <float.h>

int __flt_rounds() {
    switch (fegetround()) {
#ifdef FE_TOWARDZERO
    case FE_TOWARDZERO:
        return 0;
#endif
    case FE_TONEAREST:
        return 1;
#ifdef FE_UPWARD
    case FE_UPWARD:
        return 2;
#endif
#ifdef FE_DOWNWARD
    case FE_DOWNWARD:
        return 3;
#endif
    }
    return -1;
}