v1.3.1

[attipaci]

Bug fix release with minor enhancements.

Fixed

• Fixes for Debian i386 cross builds #167: Fixes for Debian i386 cross builds.

• Reversed quadratic coefficients in accum_prec() #174: accum_prec() had linear and quadratic time evolution coefficients swapped since v1.0. The bug affected
  the IAU2000 precession-nutation calculations, and the calculation of the complementary terms in the equation of
  equinoxes in ee_ct() / e_tilt(). The effect however is small, typically just a few micro-arcseconds (μas),
  for dates within a century of J2000.

Changed

• parse_degrees() check invalid seconds #166: Improved detection of invalid seconds in parse_degrees().

• Parsing degrees in exponential notation #169: novas_parse_degrees() to support parsing values in exponential notation also, e.g. 1.23E2, 1.23E2W etc.

• make_on_surface() to validate weather parameters #170: make_on_surface() to validate temperature and pressure values, and return -1 (with errno set to EINVAL)
  if the supplied values are outside of the sensible range.

• cache nutation_angles() + module reorg #171: Cache nutation_angles() instead of e_tilt() to improve performance in more usage scenarios. (See updated
  benchmarks).

• cache nutation_angles() + module reorg #171: Moved precession(), nutation(), and nutation_angles() to equinox.c.

• novas_jd_to_date() to check for valid input calendar. #178: novas_jd_to_date() to check if input calendar is valid and return -1 with errno set to EINVAL if it is
  not.

• jd_from_date() to check calendar validity #179: novas_jd_from_date() to check if input calendar is valid and return NaN with errno set to EINVAL if it
  is not.

• Corrected benchmarks for individual frames.

• Corrections and edits to API documentation.

Deprecated

• Deprecated ee_ct() and ira_equinox() functions. Both are meant for internal use only, and need not be exposed to
  users in general.

• Deprecated solarsystem(), solarsystem_hp(), and readeph() functions. These were prototypes for user-defined
  implementations that had to be linked together with NOVAS. In SuperNOVAS, the same functionality can be (should be)
  set dynamically, during runtime. Thus, these functions are provided to support building legacy NOVAS applications
  only, and should be avoided in new application code going forward.

---

This discussion was created from the release v1.3.1.