## Prefixes

These constants are dimensionless scaling factors.

`GSL_CONST_NUM_YOTTA`
  10^24
`GSL_CONST_NUM_ZETTA`
  10^21
`GSL_CONST_NUM_EXA`
  10^18
`GSL_CONST_NUM_PETA`
  10^15
`GSL_CONST_NUM_TERA`
  10^12
`GSL_CONST_NUM_GIGA`
  10^9
`GSL_CONST_NUM_MEGA`
  10^6
`GSL_CONST_NUM_KILO`
  10^3
`GSL_CONST_NUM_MILLI`
  10^-3
`GSL_CONST_NUM_MICRO`
  10^-6
`GSL_CONST_NUM_NANO`
  10^-9
`GSL_CONST_NUM_PICO`
  10^-12
`GSL_CONST_NUM_FEMTO`
  10^-15
`GSL_CONST_NUM_ATTO`
  10^-18
`GSL_CONST_NUM_ZEPTO`
  10^-21
`GSL_CONST_NUM_YOCTO`
  10^-24