session-ios/Libraries/ProtocolBuffers/Utilities.m

// Copyright 2008 Cyrus Najmabadi
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#import "Utilities.h"

int64_t convertFloat64ToInt64(Float64 v) {
  union { Float64 f; int64_t i; } u;
  u.f = v;
  return u.i;
}


int32_t convertFloat32ToInt32(Float32 v) {
  union { Float32 f; int32_t i; } u;
  u.f = v;
  return u.i;
}


Float64 convertInt64ToFloat64(int64_t v) {
  union { Float64 f; int64_t i; } u;
  u.i = v;
  return u.f;
}


Float32 convertInt32ToFloat32(int32_t v) {
  union { Float32 f; int32_t i; } u;
  u.i = v;
  return u.f;
}


uint64_t convertInt64ToUInt64(int64_t v) {
  union { int64_t i; uint64_t u; } u;
  u.i = v;
  return u.u;
}


int64_t convertUInt64ToInt64(uint64_t v) {
  union { int64_t i; uint64_t u; } u;
  u.u = v;
  return u.i;
}

uint32_t convertInt32ToUInt32(int32_t v) {
  union { int32_t i; uint32_t u; } u;
  u.i = v;
  return u.u;
}


int64_t convertUInt32ToInt32(uint32_t v) {
  union { int32_t i; uint32_t u; } u;
  u.u = v;
  return u.i;
}


int32_t logicalRightShift32(int32_t value, int32_t spaces) {
  return (int32_t)convertUInt32ToInt32((convertInt32ToUInt32(value) >> spaces));
}


int64_t logicalRightShift64(int64_t value, int32_t spaces) {
  return convertUInt64ToInt64((convertInt64ToUInt64(value) >> spaces));
}