[libc] Add more elementwise wrapper functions (#156515)

Summary:
Fills out some of the missing fundamental floating point operations.
These just wrap the elementwise builtin of the same name.

Author: jhuber6

libc/src/__support/CPP/simd.h

@@ -15,8 +15,8 @@
 
 #include "hdr/stdint_proxy.h"
 #include "src/__support/CPP/algorithm.h"
-#include "src/__support/CPP/bit.h"
-#include "src/__support/CPP/type_traits/integral_constant.h"
+#include "src/__support/CPP/limits.h"
+#include "src/__support/CPP/type_traits.h"
 #include "src/__support/macros/attributes.h"
 #include "src/__support/macros/config.h"
 
@@ -128,6 +128,55 @@ LIBC_INLINE constexpr simd<T, N> max(simd<T, N> x, simd<T, N> y) {
   return __builtin_elementwise_max(x, y);
 }
 
+template <typename T, size_t N>
+LIBC_INLINE constexpr simd<T, N> abs(simd<T, N> x) {
+  return __builtin_elementwise_abs(x);
+}
+template <typename T, size_t N>
+LIBC_INLINE constexpr simd<T, N> fma(simd<T, N> x, simd<T, N> y, simd<T, N> z) {
+  return __builtin_elementwise_fma(x, y, z);
+}
+template <typename T, size_t N>
+LIBC_INLINE constexpr simd<T, N> ceil(simd<T, N> x) {
+  return __builtin_elementwise_ceil(x);
+}
+template <typename T, size_t N>
+LIBC_INLINE constexpr simd<T, N> floor(simd<T, N> x) {
+  return __builtin_elementwise_floor(x);
+}
+template <typename T, size_t N>
+LIBC_INLINE constexpr simd<T, N> roundeven(simd<T, N> x) {
+  return __builtin_elementwise_roundeven(x);
+}
+template <typename T, size_t N>
+LIBC_INLINE constexpr simd<T, N> round(simd<T, N> x) {
+  return __builtin_elementwise_round(x);
+}
+template <typename T, size_t N>
+LIBC_INLINE constexpr simd<T, N> trunc(simd<T, N> x) {
+  return __builtin_elementwise_trunc(x);
+}
+template <typename T, size_t N>
+LIBC_INLINE constexpr simd<T, N> nearbyint(simd<T, N> x) {
+  return __builtin_elementwise_nearbyint(x);
+}
+template <typename T, size_t N>
+LIBC_INLINE constexpr simd<T, N> rint(simd<T, N> x) {
+  return __builtin_elementwise_rint(x);
+}
+template <typename T, size_t N>
+LIBC_INLINE constexpr simd<T, N> canonicalize(simd<T, N> x) {
+  return __builtin_elementwise_canonicalize(x);
+}
+template <typename T, size_t N>
+LIBC_INLINE constexpr simd<T, N> copysign(simd<T, N> x, simd<T, N> y) {
+  return __builtin_elementwise_copysign(x, y);
+}
+template <typename T, size_t N>
+LIBC_INLINE constexpr simd<T, N> fmod(simd<T, N> x, simd<T, N> y) {
+  return __builtin_elementwise_fmod(x, y);
+}
+
 // Reduction operations.
 template <typename T, size_t N, typename Op = cpp::plus<>>
 LIBC_INLINE constexpr T reduce(simd<T, N> v, Op op = {}) {

libc/src/string/memory_utils/generic/inline_strlen.h

@@ -9,6 +9,7 @@
 #ifndef LLVM_LIBC_SRC_STRING_MEMORY_UTILS_GENERIC_INLINE_STRLEN_H
 #define LLVM_LIBC_SRC_STRING_MEMORY_UTILS_GENERIC_INLINE_STRLEN_H
 
+#include "src/__support/CPP/bit.h"
 #include "src/__support/CPP/simd.h"
 #include "src/__support/common.h"