extend fix to RISC-V

skirpichev · skirpichev · commit 4d654aafadd1 · 2025-11-06T07:46:01.000+03:00
diff --git a/Objects/floatobject.c b/Objects/floatobject.c
@@ -2216,7 +2216,7 @@ PyFloat_Pack4(double x, char *data, int le)
             uint32_t u32;
 
             memcpy(&u32, &y, 4);
-            if ((v & (1ULL << 51)) == 0) {
+            if ((v & (1ULL << 51)) == 0 && (u32 & 0x3fffff)) {
                 u32 &= ~(1 << 22);
             }
             /* Workaround RISC-V: "If a NaN value is converted to a

Original file line number	Diff line number	Diff line change
`@@ -2216,7 +2216,7 @@ PyFloat_Pack4(double x, char *data, int le)`
`2216`	`2216`	`uint32_t u32;`
`2217`	`2217`
`2218`	`2218`	`memcpy(&u32, &y, 4);`
`2219`		`- if ((v & (1ULL << 51)) == 0) {`
	`2219`	`+ if ((v & (1ULL << 51)) == 0 && (u32 & 0x3fffff)) {`
`2220`	`2220`	`u32 &= ~(1 << 22);`
`2221`	`2221`	`}`
`2222`	`2222`	`/* Workaround RISC-V: "If a NaN value is converted to a`