float set implementations

Author: WillAyd

pandas/_libs/include/pandas/vendored/klib/khash_python.h

@@ -130,13 +130,23 @@ static inline khuint32_t kh_float32_hash_func(float val) {
   KHASH_INIT(name, khfloat64_t, khval_t, 1, kh_float64_hash_func,              \
              kh_floats_hash_equal)
 
+#define KHASH_SET_INIT_FLOAT64(name)                                           \
+  KHASH_INIT(name, khfloat64_t, char, 0, kh_float64_hash_func,                 \
+             kh_floats_hash_equal)
+
 KHASH_MAP_INIT_FLOAT64(float64, size_t)
+KHASH_SET_INIT_FLOAT64(float64_set)
 
 #define KHASH_MAP_INIT_FLOAT32(name, khval_t)                                  \
   KHASH_INIT(name, khfloat32_t, khval_t, 1, kh_float32_hash_func,              \
              kh_floats_hash_equal)
 
+#define KHASH_SET_INIT_FLOAT32(name)                                           \
+  KHASH_INIT(name, khfloat32_t, char, 0, kh_float32_hash_func,                 \
+             kh_floats_hash_equal)
+
 KHASH_MAP_INIT_FLOAT32(float32, size_t)
+KHASH_SET_INIT_FLOAT32(float32_set)
 
 static inline khint32_t kh_complex128_hash_func(khcomplex128_t val) {
   return kh_float64_hash_func(val.real) ^ kh_float64_hash_func(val.imag);