DBL_EXP_BIAS       91 maint/gnulib/lib/integer_length.c                 (DBL_MANT_DIG + DBL_EXP_BIAS) << DBL_EXPBIT0_BIT;
DBL_EXP_BIAS      100 maint/gnulib/lib/integer_length.c           return exponent - DBL_EXP_BIAS;
DBL_EXP_BIAS      662 maint/gnulib/lib/vasnprintf.c                    - DBL_EXP_BIAS);