[libc-commits] [libc] [libc][math] Integer-only, statically rounded implementation of expf (PR #209406)

[Hoàng Minh Thiên via libc-commits]

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@@ -8,9 +8,18 @@
 
 #include "src/math/expf.h"
 #include "src/__support/math/expf.h"
+#include "src/__support/math/expf_integer_eval.h"
 
 namespace LIBC_NAMESPACE_DECL {
 
-LLVM_LIBC_FUNCTION(float, expf, (float x)) { return math::expf(x); }
+LLVM_LIBC_FUNCTION(float, expf, (float x)) {
+#if defined(LIBC_MATH_HAS_SKIP_ACCURATE_PASS) &&                               \
+    defined(LIBC_MATH_SMALL_TABLES) &&                                         \
+    !defined(LIBC_TARGET_CPU_HAS_FPU_DOUBLE)
+  return math::integer_only::expf(x);
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hmthien050209 wrote:

Updated to add static-rounding-specific tests alongside this new implementation.

https://github.com/llvm/llvm-project/pull/209406