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strconv: add missing doc strings (#14164)

master
Larpon 2022-04-26 17:09:36 +02:00 committed by GitHub
parent 660201c188
commit 1c48a8d760
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GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 57 additions and 13 deletions
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4
vlib/strconv/f32_str.c.v
View File

@ -322,7 +322,7 @@ fn f32_to_decimal(mant u32, exp u32) Dec32 {
// String Functions
//=============================================================================
// f32_to_str return a string in scientific notation with max n_digit after the dot
// f32_to_str returns a `string` in scientific notation with max `n_digit` after the dot.
pub fn f32_to_str(f f32, n_digit int) string {
mut u1 := Uf32{}
u1.f = f
@ -349,7 +349,7 @@ pub fn f32_to_str(f f32, n_digit int) string {
return d.get_string_32(neg, n_digit, 0)
}
// f32_to_str return a string in scientific notation with max n_digit after the dot
// f32_to_str_pad returns a `string` in scientific notation with max `n_digit` after the dot.
pub fn f32_to_str_pad(f f32, n_digit int) string {
mut u1 := Uf32{}
u1.f = f

4
vlib/strconv/f64_str.c.v
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@ -331,7 +331,7 @@ fn f64_to_decimal(mant u64, exp u64) Dec64 {
// String Functions
//=============================================================================
// f64_to_str return a string in scientific notation with max n_digit after the dot
// f64_to_str returns `f` as a `string` in scientific notation with max `n_digit` digits after the dot.
pub fn f64_to_str(f f64, n_digit int) string {
mut u1 := Uf64{}
u1.f = f
@ -356,7 +356,7 @@ pub fn f64_to_str(f f64, n_digit int) string {
return d.get_string_64(neg, n_digit, 0)
}
// f64_to_str return a string in scientific notation with max n_digit after the dot
// f64_to_str returns `f` as a `string` in scientific notation with max `n_digit` digits after the dot.
pub fn f64_to_str_pad(f f64, n_digit int) string {
mut u1 := Uf64{}
u1.f = f

1
vlib/strconv/format.v
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@ -89,6 +89,7 @@ pub mut:
rm_tail_zero bool // remove the tail zeros from floats
}
// format_str returns a `string` formatted according to the options set in `p`.
[manualfree]
pub fn format_str(s string, p BF_param) string {
if p.len0 <= 0 {

11
vlib/strconv/format_mem.c.v
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@ -9,7 +9,7 @@ module strconv
import strings
// strings.Builder version of format_str
// format_str_sb is a `strings.Builder` version of `format_str`.
pub fn format_str_sb(s string, p BF_param, mut sb strings.Builder) {
if p.len0 <= 0 {
sb.write_string(s)
@ -40,7 +40,7 @@ const (
digit_pairs = '00102030405060708090011121314151617181910212223242526272829203132333435363738393041424344454647484940515253545556575859506162636465666768696071727374757677787970818283848586878889809192939495969798999'
)
// format_dec_sb format a u64
// format_dec_sb formats an u64 using a `strings.Builder`.
[direct_array_access]
pub fn format_dec_sb(d u64, p BF_param, mut res strings.Builder) {
mut n_char := dec_digits(d)
@ -135,8 +135,9 @@ pub fn format_dec_sb(d u64, p BF_param, mut res strings.Builder) {
return
}
// f64_to_str_lnd1 formats a f64 to a `string` with `dec_digit` digits after the dot.
[direct_array_access; manualfree]
pub fn f64_to_str_lnd1(f f64, dec_digit int) string {
fn f64_to_str_lnd1(f f64, dec_digit int) string {
unsafe {
// we add the rounding value
s := f64_to_str(f + dec_round[dec_digit], 18)
@ -311,7 +312,7 @@ pub fn f64_to_str_lnd1(f f64, dec_digit int) string {
}
}
// strings.Builder version of format_fl
// format_fl is a `strings.Builder` version of format_fl.
[direct_array_access; manualfree]
pub fn format_fl(f f64, p BF_param) string {
unsafe {
@ -388,6 +389,7 @@ pub fn format_fl(f f64, p BF_param) string {
}
}
// format_es returns a f64 as a `string` formatted according to the options set in `p`.
[direct_array_access; manualfree]
pub fn format_es(f f64, p BF_param) string {
unsafe {
@ -458,6 +460,7 @@ pub fn format_es(f f64, p BF_param) string {
}
}
// remove_tail_zeros strips traling zeros from `s` and return the resulting `string`.
[direct_array_access]
pub fn remove_tail_zeros(s string) string {
unsafe {

12
vlib/strconv/ftoa.c.v
View File

@ -18,21 +18,33 @@ inspired by the Go version here:
https://github.com/cespare/ryu/tree/ba56a33f39e3bbbfa409095d0f9ae168a595feea
*/
// ftoa_64 returns a string in scientific notation with max 17 digits after the dot.
//
// Example: assert strconv.ftoa_64(123.1234567891011121) == '1.2312345678910111e+02'
[inline]
pub fn ftoa_64(f f64) string {
return f64_to_str(f, 17)
}
// ftoa_long_64 returns `f` as a `string` in decimal notation with a maximum of 17 digits after the dot.
//
// Example: assert strconv.f64_to_str_l(123.1234567891011121) == '123.12345678910111'
[inline]
pub fn ftoa_long_64(f f64) string {
return f64_to_str_l(f)
}
// ftoa_32 returns a `string` in scientific notation with max 8 digits after the dot.
//
// Example: assert strconv.ftoa_32(34.1234567) == '3.4123455e+01'
[inline]
pub fn ftoa_32(f f32) string {
return f32_to_str(f, 8)
}
// ftoa_long_32 returns `f` as a `string` in decimal notation with a maximum of 6 digits after the dot.
//
// Example: assert strconv.ftoa_long_32(34.1234567) == '34.12346'
[inline]
pub fn ftoa_long_32(f f32) string {
return f32_to_str_l(f)

26
vlib/strconv/utilities.c.v
View File

@ -25,7 +25,9 @@ f64 to string with string format
*/
// TODO: Investigate precision issues
// f32_to_str_l return a string with the f32 converted in a string in decimal notation
// f32_to_str_l returns `f` as a `string` in decimal notation with a maximum of 6 digits after the dot.
//
// Example: assert strconv.f32_to_str_l(34.1234567) == '34.12346'
[manualfree]
pub fn f32_to_str_l(f f32) string {
s := f32_to_str(f, 6)
@ -34,6 +36,10 @@ pub fn f32_to_str_l(f f32) string {
return res
}
// f32_to_str_l_no_dot returns `f` as a `string` in decimal notation with a maximum of 6 digits after the dot.
// The decimal digits after the dot can be omitted.
//
// Example: assert strconv.f32_to_str_l_no_dot(34.) == '34'
[manualfree]
pub fn f32_to_str_l_no_dot(f f32) string {
s := f32_to_str(f, 6)
@ -42,6 +48,9 @@ pub fn f32_to_str_l_no_dot(f f32) string {
return res
}
// f64_to_str_l returns `f` as a `string` in decimal notation with a maximum of 18 digits after the dot.
//
// Example: assert strconv.f64_to_str_l(123.1234567891011121) == '123.12345678910111'
[manualfree]
pub fn f64_to_str_l(f f64) string {
s := f64_to_str(f, 18)
@ -50,6 +59,10 @@ pub fn f64_to_str_l(f f64) string {
return res
}
// f64_to_str_l_no_dot returns `f` as a `string` in decimal notation with a maximum of 18 digits after the dot.
// The decimal digits after the dot can be omitted.
//
// Example: assert strconv.f64_to_str_l_no_dot (34.) == '34'
[manualfree]
pub fn f64_to_str_l_no_dot(f f64) string {
s := f64_to_str(f, 18)
@ -58,7 +71,10 @@ pub fn f64_to_str_l_no_dot(f f64) string {
return res
}
// f64_to_str_l return a string with the f64 converted in a string in decimal notation
// fxx_to_str_l_parse returns a `string` in decimal notation converted from a
// floating-point `string` in scientific notation.
//
// Example: assert strconv.fxx_to_str_l_parse('34.22e+00') == '34.22'
[manualfree]
pub fn fxx_to_str_l_parse(s string) string {
// check for +inf -inf Nan
@ -181,7 +197,11 @@ pub fn fxx_to_str_l_parse(s string) string {
return unsafe { tos(res.data, r_i) }
}
// f64_to_str_l return a string with the f64 converted in a string in decimal notation
// fxx_to_str_l_parse_no_dot returns a `string` in decimal notation converted from a
// floating-point `string` in scientific notation.
// The decimal digits after the dot can be omitted.
//
// Example: assert strconv.fxx_to_str_l_parse_no_dot ('34.e+01') == '340'
[manualfree]
pub fn fxx_to_str_l_parse_no_dot(s string) string {
// check for +inf -inf Nan

12
vlib/strconv/vprintf.c.v
View File

@ -22,10 +22,18 @@ enum Char_parse_state {
reset_params
}
// v_printf prints a sprintf-like formated `string` to the terminal.
pub fn v_printf(str string, pt ...voidptr) {
print(v_sprintf(str, ...pt))
}
// v_sprintf returns a sprintf-like formated `string`.
//
// Example:
// ```v
// x := 3.141516
// assert strconv.v_sprintf('aaa %G', x) == 'aaa 3.141516'
// ```
[manualfree]
pub fn v_sprintf(str string, pt ...voidptr) string {
mut res := strings.new_builder(pt.len * 16)
@ -628,7 +636,7 @@ pub fn format_fl_old(f f64, p BF_param) string {
}
[manualfree]
pub fn format_es_old(f f64, p BF_param) string {
fn format_es_old(f f64, p BF_param) string {
unsafe {
mut s := ''
mut fs := f64_to_str_pad(if f > 0 { f } else { -f }, p.len1)
@ -692,7 +700,7 @@ pub fn format_es_old(f f64, p BF_param) string {
}
}
pub fn remove_tail_zeros_old(s string) string {
fn remove_tail_zeros_old(s string) string {
mut i := 0
mut last_zero_start := -1
mut dot_pos := -1