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Author SHA1 Message Date
Siva Chandra Reddy 87bf0b0ee9 [libc] Add a class called NormalFloat which represents normalized floats. 
This class helps in dealing with normal and subnormal numbers uniformly.
Moreover, since this class has been designed to handle all floating
formats across platforms, it helps implement floating point functions in
a uniform manner.

The implementations of frexp and logb have been switched to use this new
class as it allows us to use just one implementation across all
different floating point formats.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D86241
 2020-08-20 09:00:35 -07:00
Siva Chandra Reddy a00fb593b4 [libc] Add long double flavors of the floating point manipulation functions. 
Specifically: copysignl, frexpl, logbl and modfl have been added.

Reviewers: asteinhauser

Differential Revision: https://reviews.llvm.org/D82357
 2020-06-23 23:46:58 -07:00
Siva Chandra Reddy 6fb7f3a3cf [lib][NFC] Split the floating point util functions into multiple files. 
The grouping now reflects the grouping on cppreference.com.
 2020-06-15 23:12:00 -07:00
Siva Chandra Reddy 118c13c691 [libc] Add implementation of few floating point manipulation functions. 
Implementations of copysign[f], frexp[f], logb[f], and modf[f] are added.

Reviewers: asteinhauser

Differential Revision: https://reviews.llvm.org/D81134
 2020-06-11 12:23:11 -07:00