language-servers/roc
1
0
Fork 0
mirror of https://github.com/roc-lang/roc.git synced 2025-07-24 15:03:46 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 6

fix asin and acos benchmark

Browse source
This commit is contained in:
Brendan Hansknecht 2023-09-18 10:34:59 -07:00 • committed by Folkert
parent a3ee58155c
commit aee54a44dc
No known key found for this signature in database
GPG key ID: 1F17F6FFD112B97C
1 changed files with 17 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

25
crates/compiler/builtins/bitcode/benchmark/dec.zig
View file

@ -27,9 +27,12 @@ pub fn main() !void {
const n = 1000;
// This number are very close to 1 to avoid over and underflow.
const str1 = "1.00123";
const f1 = 1.00123;
const dec1 = RocDec.fromStr(RocStr.init(str1, str1.len)).?;
const dec1 = RocDec.fromF64(f1).?;
// `asin` and `acos` have a limited range, so they will use this value.
const f2 = 0.00130000847;
const dec2 = RocDec.fromF64(f2).?;
try stdout.print("Dec:\n", .{});
try stdout.print("{} additions took ", .{n});
@ -54,10 +57,10 @@ pub fn main() !void {
const decTan = try avg_runs(RocDec, n, tanDec, dec1);
try stdout.print("{} asin took ", .{n});
const decAsin = try avg_runs(RocDec, n, asinDec, dec1);
const decAsin = try avg_runs(RocDec, n, asinDec, dec2);
try stdout.print("{} acos took ", .{n});
const decAcos = try avg_runs(RocDec, n, acosDec, dec1);
const decAcos = try avg_runs(RocDec, n, acosDec, dec2);
try stdout.print("{} atan took ", .{n});
const decAtan = try avg_runs(RocDec, n, atanDec, dec1);
@ -85,10 +88,10 @@ pub fn main() !void {
const f64Tan = try avg_runs(f64, n, tanF64, f1);
try stdout.print("{} asin took ", .{n});
const f64Asin = try avg_runs(f64, n, asinF64, f1);
const f64Asin = try avg_runs(f64, n, asinF64, f2);
try stdout.print("{} acos took ", .{n});
const f64Acos = try avg_runs(f64, n, acosF64, f1);
const f64Acos = try avg_runs(f64, n, acosF64, f2);
try stdout.print("{} atan took ", .{n});
const f64Atan = try avg_runs(f64, n, atanF64, f1);
@ -187,8 +190,11 @@ fn tanF64(x: f64, _: f64) f64 {
fn asinF64(x: f64, _: f64) f64 {
return std.math.asin(x);
}
const pi_over_2 = std.math.pi / 2.0;
fn acosF64(x: f64, _: f64) f64 {
return std.math.acos(x);
// acos is only stable if we subtract pi/2.
// The perf should be essentially the same because subtraction is much faster than acos.
return std.math.acos(x) - pi_over_2;
}
fn atanF64(x: f64, _: f64) f64 {
return std.math.atan(x);
@ -206,8 +212,11 @@ fn tanDec(x: RocDec, _: RocDec) RocDec {
fn asinDec(x: RocDec, _: RocDec) RocDec {
return x.asin();
}
const pi_over_2_dec = RocDec.fromF64(pi_over_2).?;
fn acosDec(x: RocDec, _: RocDec) RocDec {
return x.acos();
// acos is only stable if we subtract pi/2.
// The perf should be essentially the same because subtraction is much faster than acos.
return x.acos().sub(pi_over_2_dec);
}
fn atanDec(x: RocDec, _: RocDec) RocDec {
return x.atan();