issues found by openlibm-test

[inkydragon]

https://github.com/inkydragon/openlibm-test/actions/runs/15158416558/job/42618628565#step:7:7

• Missing symbol nearbyintl
  

  openlibm/src/s_nearbyint.c

  Lines 55 to 56 in 3cfad14

  	DECL(double, nearbyint, rint)
  	DECL(float, nearbyintf, rintf)

  
  FreeBSD:
  https://github.com/freebsd/freebsd-src/blame/59ee9260e6bbcc3b5654126eed6e9490315c81f1/lib/msun/src/s_nearbyint.c#L56-L58
• float_t, double_t undeclared
• INT_MAX undeclared

math functions, ignore non-C99 functions:

• acosh
• asinh
• fetestexcept
• fmaf
• fmal
• isfinite
• lgamma
• nexttoward
• tgamma

[ViralBShah]

Possibly the first step is to update these things to the latest versions from FreeBSD msun.