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#include "bid_internal.h"
double expm1(double);

BID_TYPE0_FUNCTION_ARGTYPE1(BID_UINT32, bid32_expm1, BID_UINT32, x)

// Declare local variables

  BID_UINT32 res;
  double xd, yd;

// Check for NaN and just return the same NaN, quieted and canonized

  if ((x & NAN_MASK32) == NAN_MASK32)
   {
     #ifdef BID_SET_STATUS_FLAGS
     if ((x & SNAN_MASK32) == SNAN_MASK32)
        __set_status_flags (pfpsf, BID_INVALID_EXCEPTION);
     #endif
     res = x & 0xfc0ffffful;
     if ((res & 0x000ffffful) > 999999ul) res &= ~0x000ffffful;
     BID_RETURN(res);
   }

// Convert to binary and do the operation naively

  BIDECIMAL_CALL1(bid32_to_binary64,xd,x);
  yd = expm1(xd);
  BIDECIMAL_CALL1(binary64_to_bid32,res,yd);
  BID_RETURN (res);
}
