EXP_INFNAN
[0] = (EXP_INFNAN >> 24) & 0x7f,
[1] = (EXP_INFNAN >> 16) & 0xff,
[2] = (EXP_INFNAN >> 8) & 0xff,
[3] = (EXP_INFNAN >> 0) & 0xff,
[sizeof(long double)-4] = (EXP_INFNAN >> 0) & 0xff,
[sizeof(long double)-3] = (EXP_INFNAN >> 8) & 0xff,
[sizeof(long double)-2] = (EXP_INFNAN >> 16) & 0xff,
[sizeof(long double)-1] = (EXP_INFNAN >> 24) & 0x7f,