math h status - chasonr/djgpp-lib GitHub Wiki

math.h provides all types, constants, macros and functions required by C99 and C11/C17. It provides all items required by SuSv4, except for the obsolescent MAXFLOAT constant; new code should include float.h and use FLT_MAX.

The only additional functions required in SuSv4 are the Bessel functions j0, j1, jn, y0, y1 and yn. SuSv4 requires only double versions of these functions; math.h provides float versions also, but not long double versions.