math: Add platform independent implementation for modf
math: Add platform independent implementation for modff
math: Add platform independent implementation for modfl
softmath: Add frexpl
softmath: Add remquo
softmath: Add remquof
softmath: Add remquol
softmath: Improved sincosl implementation
math: Fix isnanl return on ARM
math: Fix fpclassifyl return on ARM
math: Fix lgammal warning on ARM
math: Fix signbitl return on ARM
math: Fix long double max values on ARM