fitsio: fix float64 formatting #54

[bjet007]

fix: Change printing of float64 from %f to %#20g.

[codecov-io]

Codecov Report

Merging #57 into master will decrease coverage by 1.46%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #57      +/-   ##
==========================================
- Coverage   69.95%   68.48%   -1.47%     
==========================================
  Files          14       14              
  Lines        2922     2618     -304     
==========================================
- Hits         2044     1793     -251     
+ Misses        728      675      -53     
  Partials      150      150              

Impacted Files	Coverage Δ
utils.go	65.12% <100.00%> (-0.77%)	:arrow_down:
file.go	72.22% <0.00%> (-4.20%)	:arrow_down:
image.go	54.60% <0.00%> (-2.54%)	:arrow_down:
encode.go	51.51% <0.00%> (-2.34%)	:arrow_down:
fltimg/image.go	52.00% <0.00%> (-2.24%)	:arrow_down:
rows.go	87.17% <0.00%> (-1.84%)	:arrow_down:
header.go	66.50% <0.00%> (-1.76%)	:arrow_down:
table.go	58.61% <0.00%> (-0.59%)	:arrow_down:
binary.go	92.76% <0.00%> (-0.41%)	:arrow_down:
... and 5 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 0188015...d518e00. Read the comment docs.

[bjet007]

While re-reading the spec, I realized that the exponent letter need to be uppercased. So I change the formatting to do that and I did add few other test.

I kept the commit separated for review, but I can squash them before the merge.

Ben

[sbinet]

(I'll squash when I'll merge that PR in)

[sbinet]

needs https://github.com/astrogo/license/pull/5

[sbinet]

thanks again.