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strconv: printf and string format utilities

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This commit is contained in:
penguindark
2020-04-26 09:23:10 +02:00
committed by GitHub
parent 7955181c6c
commit b67698888c
5 changed files with 968 additions and 6 deletions
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16
vlib/strconv/ftoa/f64_str.v
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@ -78,9 +78,10 @@ const(
)
fn (d Dec64) get_string_64(neg bool, i_n_digit int, i_pad_digit int) string {
n_digit := i_n_digit + 1
mut n_digit := i_n_digit + 1
pad_digit := i_pad_digit + 1
mut out := d.m
mut d_exp := d.e
mut out_len := decimal_len_64(out)
out_len_original := out_len
@ -104,10 +105,19 @@ fn (d Dec64) get_string_64(neg bool, i_n_digit int, i_pad_digit int) string {
// rounding last used digit
if n_digit < out_len {
//println("out:[$out]")
out += ten_pow_table_64[out_len - n_digit - 1] * 5 // round to up
out /= ten_pow_table_64[out_len - n_digit ]
//println("out1:[$out] ${d.m / ten_pow_table_64[out_len - n_digit ]}")
if d.m / ten_pow_table_64[out_len - n_digit ] < out {
d_exp += 1
n_digit += 1
}
//println("cmp: ${d.m/ten_pow_table_64[out_len - n_digit ]} ${out/ten_pow_table_64[out_len - n_digit ]}")
out_len = n_digit
//println("orig: ${out_len_original} new len: ${out_len}")
//println("orig: ${out_len_original} new len: ${out_len} out:[$out]")
}
y := i + out_len
@ -147,7 +157,7 @@ fn (d Dec64) get_string_64(neg bool, i_n_digit int, i_pad_digit int) string {
buf[i]=`e`
i++
mut exp := d.e + out_len_original - 1
mut exp := d_exp + out_len_original - 1
if exp < 0 {
buf[i]=`-`
i++