GSoC/GCI Archive
Google Code-in 2011 Haiku

Implement missing <math.h> functions

completed by: Bryan Dunsmore

mentors: Ryan Leavengood, Alexander von Gluck IV

As part of Haiku trac ticket 2696:http://dev.haiku-os.org/ticket/2696

These are present in the math.h header, but not yet implemented:
math.h:
lgammal
gamma_r
gammaf_r

The following issues also need to be adressed in math.h:

1. Missing definition of float_t and double_t as described at opengroup.org.
2. Missing declaration of FLT_EVAL_METHOD.
3. Function "int isgreater(real-floating x, real-floating y);" is never defined or declared in the header.
4. Function "int isgreaterequal(real-floating x, real-floating y);" is never defined or declared in the header.
5. Functions "int isless(real-floating x, real-floating y);,
int islessequal(real-floating x, real-floating y);,
int islessgreater(real-floating x, real-floating y);" are never defined or declared in the header.
6. Function "int isunordered(real-floating x, real-floating y);" is never defined or declared in the header.
7. There is no definition of "MAXFLOAT" constant in the header.
8. The following optional macros "FP_FAST_FMA, FP_FAST_FMAF, FP_FAST_FMAL" are not defined in the header.
9. The following macros "FP_ILOGB0, FP_ILOGBNAN, MATH_ERRNO, MATH_ERREXCEPT, math_errhandling" are never defined in the header.

The functions need to provide the requirements as defined at:
http://www.opengroup.org/onlinepubs/9699919799/basedefs/math.h.html