Fixed cbrtf for negative inputs

ZERICO2005 · mateoconlechuga · commit 9d82626132b9 · 2025-02-19T15:44:34.000-07:00
diff --git a/src/libc/cbrt.c b/src/libc/cbrt.c
@@ -2,7 +2,7 @@
 
 float cbrtf(float x)
 {
-    return powf(x, 1/3.f);
+    return copysignf(powf(fabsf(x), 1.f/3.f), x);
 }
 
 double cbrt(double) __attribute__((alias("cbrtf")));

Original file line number	Diff line number	Diff line change
`@@ -2,7 +2,7 @@`
`2`	`2`
`3`	`3`	`float cbrtf(float x)`
`4`	`4`	`{`
`5`		`- return powf(x, 1/3.f);`
	`5`	`+ return copysignf(powf(fabsf(x), 1.f/3.f), x);`
`6`	`6`	`}`
`7`	`7`
`8`	`8`	`double cbrt(double) __attribute__((alias("cbrtf")));`