github.com/benhoyt/goawk@v1.8.1/testdata/gawk/ofmtstrnum.awk (about)

     1  BEGIN {
     2  	split(" 1", f, "x")
     3  	OFMT = "%.1f"
     4  	print f[1]
     5  	x = f[1] + 0
     6  	print f[1]
     7  }