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  1. @c ----------------------------------------------------------------------
  2. @node modfl, math
  3. @subheading Syntax
  4.  
  5. @example
  6. #include <math.h>
  7.  
  8. long double modf(long double x, long double *pint);
  9. @end example
  10.  
  11. @subheading Description
  12.  
  13. @code{modfl} breaks down @var{x} into its integer portion (which it
  14. stores in @var{*pint}) and the remaining fractional portion, which it
  15. returns.
  16.  
  17. @subheading Return Value
  18.  
  19. The fractional portion.
  20.