[libc] Enable intermediate computation in float for baremetal (llvm#163829)

petrhosek · web-flow · commit 08c115d1f8a6 · 2025-10-16T11:57:00.000-07:00
This can improve performance on 32-bit baremetal targets.
diff --git a/libc/config/baremetal/config.json b/libc/config/baremetal/config.json
@@ -36,7 +36,7 @@
   },
   "math": {
     "LIBC_CONF_MATH_OPTIMIZATIONS": {
-      "value": "(LIBC_MATH_SKIP_ACCURATE_PASS | LIBC_MATH_SMALL_TABLES | LIBC_MATH_NO_ERRNO)"
+      "value": "(LIBC_MATH_SKIP_ACCURATE_PASS | LIBC_MATH_SMALL_TABLES | LIBC_MATH_NO_ERRNO | LIBC_MATH_INTERMEDIATE_COMP_IN_FLOAT)"
     }
   },
   "general": {

Original file line number	Diff line number	Diff line change
`@@ -36,7 +36,7 @@`
`36`	`36`	`},`
`37`	`37`	`"math": {`
`38`	`38`	`"LIBC_CONF_MATH_OPTIMIZATIONS": {`
`39`		`- "value": "(LIBC_MATH_SKIP_ACCURATE_PASS \| LIBC_MATH_SMALL_TABLES \| LIBC_MATH_NO_ERRNO)"`
	`39`	`+ "value": "(LIBC_MATH_SKIP_ACCURATE_PASS \| LIBC_MATH_SMALL_TABLES \| LIBC_MATH_NO_ERRNO \| LIBC_MATH_INTERMEDIATE_COMP_IN_FLOAT)"`
`40`	`40`	`}`
`41`	`41`	`},`
`42`	`42`	`"general": {`