diff options
Diffstat (limited to 'hr/hr.go')
-rw-r--r-- | hr/hr.go | 37 |
1 files changed, 36 insertions, 1 deletions
@@ -55,8 +55,8 @@ func (hr *hr) CardinalPluralRule(num float64, v uint64) locales.PluralRule { n := math.Abs(num) i := int64(n) f := locales.F(n, v) - iMod100 := i % 100 iMod10 := i % 10 + iMod100 := i % 100 fMod10 := f % 10 fMod100 := f % 100 @@ -145,3 +145,38 @@ func (hr *hr) FmtNumber(num float64, v uint64) []byte { return b } + +// FmtPercent returns 'num' with digits/precision of 'v' for 'hr' and handles both Whole and Real numbers based on 'v' +// returned as a []byte just in case the caller wishes to add more and can help +// avoid allocations; otherwise just cast as string. +// NOTE: 'num' passed into FmtPercent is assumed to be in percent already +func (hr *hr) FmtPercent(num float64, v uint64) []byte { + + s := strconv.FormatFloat(math.Abs(num), 'f', int(v), 64) + l := len(s) + len(hr.decimal) + + b := make([]byte, 0, l) + + for i := len(s) - 1; i >= 0; i-- { + + if s[i] == '.' { + b = append(b, hr.decimal[0]) + continue + } + + b = append(b, s[i]) + } + + if num < 0 { + b = append(b, hr.minus[0]) + } + + // reverse + for i, j := 0, len(b)-1; i < j; i, j = i+1, j-1 { + b[i], b[j] = b[j], b[i] + } + + b = append(b, hr.Percent[0]) + + return b +} |