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mirror of https://github.com/vlang/v.git synced 2023-08-10 21:13:21 +03:00

builtin: float.v + remove #include <math.h>

This commit is contained in:
Alexander Medvednikov 2019-10-15 04:46:40 +03:00
parent 4b176ba855
commit f9593bd857
4 changed files with 121 additions and 122 deletions

113
vlib/builtin/float.v Normal file
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@ -0,0 +1,113 @@
// Copyright (c) 2019 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
module builtin
#include <float.h>
pub fn (d f64) str() string {
buf := malloc(sizeof(double) * 5 + 1)// TODO
C.sprintf(*char(buf), '%f', d)
return tos(buf, vstrlen(buf))
}
pub fn (d f32) str() string {
buf := malloc(sizeof(double) * 5 + 1)// TODO
C.sprintf(*char(buf), '%f', d)
return tos(buf, vstrlen(buf))
}
fn f32_abs(a f32) f32 { return if a < 0 { -a } else { a } }
fn f64_abs(a f64) f64 { return if a < 0 { -a } else { a } }
// compare floats using C epsilon
// ==
pub fn (a f64) eq(b f64) bool {
return f64_abs(a - b) <= C.DBL_EPSILON
}
pub fn (a f32) eq(b f32) bool {
return f32_abs(a - b) <= C.FLT_EPSILON
}
pub fn (a f64) eqbit(b f64) bool {
return C.DEFAULT_EQUAL(a, b)
}
pub fn (a f32) eqbit(b f32) bool {
return C.DEFAULT_EQUAL(a, b)
}
// !=
fn (a f64) ne(b f64) bool {
return !a.eq(b)
}
fn (a f32) ne(b f32) bool {
return !a.eq(b)
}
pub fn (a f64) nebit(b f64) bool {
return C.DEFAULT_NOT_EQUAL(a, b)
}
pub fn (a f32) nebit(b f32) bool {
return C.DEFAULT_NOT_EQUAL(a, b)
}
// a < b
fn (a f64) lt(b f64) bool {
return a.ne(b) && a.ltbit(b)
}
fn (a f32) lt(b f32) bool {
return a.ne(b) && a.ltbit(b)
}
fn (a f64) ltbit(b f64) bool {
return C.DEFAULT_LT(a, b)
}
fn (a f32) ltbit(b f32) bool {
return C.DEFAULT_LT(a, b)
}
// a <= b
fn (a f64) le(b f64) bool {
return !a.gt(b)
}
fn (a f32) le(b f32) bool {
return !a.gt(b)
}
fn (a f64) lebit(b f64) bool {
return C.DEFAULT_LE(a, b)
}
fn (a f32) lebit(b f32) bool {
return C.DEFAULT_LE(a, b)
}
// a > b
fn (a f64) gt(b f64) bool {
return a.ne(b) && a.gtbit(b)
}
fn (a f32) gt(b f32) bool {
return a.ne(b) && a.gtbit(b)
}
fn (a f64) gtbit(b f64) bool {
return C.DEFAULT_GT(a, b)
}
fn (a f32) gtbit(b f32) bool {
return C.DEFAULT_GT(a, b)
}
// a >= b
fn (a f64) ge(b f64) bool {
return !a.lt(b)
}
fn (a f32) ge(b f32) bool {
return !a.lt(b)
}
fn (a f64) gebit(b f64) bool {
return C.DEFAULT_GE(a, b)
}
fn (a f32) gebit(b f32) bool {
return C.DEFAULT_GE(a, b)
}

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@ -4,130 +4,12 @@
module builtin
#include <float.h>
#include <math.h>
pub fn (d f64) str() string {
buf := malloc(sizeof(double) * 5 + 1)// TODO
C.sprintf(*char(buf), '%f', d)
return tos(buf, vstrlen(buf))
}
pub fn (d f32) str() string {
buf := malloc(sizeof(double) * 5 + 1)// TODO
C.sprintf(*char(buf), '%f', d)
return tos(buf, vstrlen(buf))
}
pub fn ptr_str(ptr voidptr) string {
buf := malloc(sizeof(double) * 5 + 1)// TODO
C.sprintf(*char(buf), '%p', ptr)
return tos(buf, vstrlen(buf))
}
// compare floats using C epsilon
// ==
pub fn (a f64) eq(b f64) bool {
$if windows {
$if tinyc {
return a -b <= 0.01
} $else {
return C.fabs(a - b) <= C.DBL_EPSILON
}
} $else {
return C.fabs(a - b) <= C.DBL_EPSILON
}
}
pub fn (a f32) eq(b f32) bool {
$if windows {
$if tinyc {
return a -b <= 0.01
} $else {
return C.fabsf(a - b) <= C.FLT_EPSILON
}
} $else {
return C.fabsf(a - b) <= C.FLT_EPSILON
}
}
pub fn (a f64) eqbit(b f64) bool {
return C.DEFAULT_EQUAL(a, b)
}
pub fn (a f32) eqbit(b f32) bool {
return C.DEFAULT_EQUAL(a, b)
}
// !=
fn (a f64) ne(b f64) bool {
return !a.eq(b)
}
fn (a f32) ne(b f32) bool {
return !a.eq(b)
}
pub fn (a f64) nebit(b f64) bool {
return C.DEFAULT_NOT_EQUAL(a, b)
}
pub fn (a f32) nebit(b f32) bool {
return C.DEFAULT_NOT_EQUAL(a, b)
}
// a < b
fn (a f64) lt(b f64) bool {
return a.ne(b) && a.ltbit(b)
}
fn (a f32) lt(b f32) bool {
return a.ne(b) && a.ltbit(b)
}
fn (a f64) ltbit(b f64) bool {
return C.DEFAULT_LT(a, b)
}
fn (a f32) ltbit(b f32) bool {
return C.DEFAULT_LT(a, b)
}
// a <= b
fn (a f64) le(b f64) bool {
return !a.gt(b)
}
fn (a f32) le(b f32) bool {
return !a.gt(b)
}
fn (a f64) lebit(b f64) bool {
return C.DEFAULT_LE(a, b)
}
fn (a f32) lebit(b f32) bool {
return C.DEFAULT_LE(a, b)
}
// a > b
fn (a f64) gt(b f64) bool {
return a.ne(b) && a.gtbit(b)
}
fn (a f32) gt(b f32) bool {
return a.ne(b) && a.gtbit(b)
}
fn (a f64) gtbit(b f64) bool {
return C.DEFAULT_GT(a, b)
}
fn (a f32) gtbit(b f32) bool {
return C.DEFAULT_GT(a, b)
}
// a >= b
fn (a f64) ge(b f64) bool {
return !a.lt(b)
}
fn (a f32) ge(b f32) bool {
return !a.lt(b)
}
fn (a f64) gebit(b f64) bool {
return C.DEFAULT_GE(a, b)
}
fn (a f32) gebit(b f32) bool {
return C.DEFAULT_GE(a, b)
}
// fn (nn i32) str() string {
// return i
// }

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@ -266,7 +266,7 @@ fn (p mut Parser) parse(pass Pass) {
p.can_chash = p.mod=='ui' || p.mod == 'darwin'// TODO tmp remove
// Import pass - the first and the smallest pass that only analyzes imports
// if we are a building module get the full module name from v.mod
fq_mod := if p.pref.build_mode == .build_module && p.v.mod.ends_with(p.mod) {
fq_mod := if p.pref.build_mode == .build_module && p.v.mod.ends_with(p.mod) {
p.v.mod
}
// fully qualify the module name, eg base64 to encoding.base64
@ -1627,10 +1627,12 @@ fn (p mut Parser) bterm() string {
p.expected_type = typ
is_str := typ=='string' && !p.is_sql
is_ustr := typ=='ustring'
is_float := typ=='f64' || typ=='f32'
is_float := typ[0] == `f` && (typ in ['f64', 'f32']) &&
!(p.cur_fn.name in ['f64_abs', 'f32_abs']) &&
!(p.cur_fn.name == 'eq')
expr_type := typ
tok := p.tok
if tok in [ .eq, .gt, .lt, .le, .ge, .ne] {
if tok in [.eq, .gt, .lt, .le, .ge, .ne] {
p.fgen(' ${p.tok.str()} ')
if (is_float || is_str || is_ustr) && !p.is_js {
p.gen(',')
@ -1686,7 +1688,7 @@ fn (p mut Parser) bterm() string {
case TokenKind.lt: p.cgen.set_placeholder(ph, 'ustring_lt(')
}
}
if is_float {
if is_float && p.cur_fn.name != 'f32_abs' && p.cur_fn.name != 'f64_abs' {
p.gen(')')
switch tok {
case TokenKind.eq: p.cgen.set_placeholder(ph, '${expr_type}_eq(')

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@ -4,6 +4,8 @@
module math
#include <math.h>
// NOTE
// When adding a new function, please make sure it's in the right place.
// All functions are sorted alphabetically.