replace random with fastrand

unit_test/math_test.cc

 /*
  *  Copyright 2013 The LibYuv Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS. All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 48 matching lines @@
   for (int i = 1; i < 4100; ++i) {
     EXPECT_EQ(0x10000, libyuv::FixedDiv(i, i));
     EXPECT_EQ(0x20000, libyuv::FixedDiv(i * 2, i));
     EXPECT_EQ(0x30000, libyuv::FixedDiv(i * 3, i));
     EXPECT_EQ(0x40000, libyuv::FixedDiv(i * 4, i));
     EXPECT_EQ(0x08000, libyuv::FixedDiv(i, i * 2));
     EXPECT_NEAR(16384 * 65536 / i, libyuv::FixedDiv(16384, i), 1);
   }
   EXPECT_EQ(123 * 65536, libyuv::FixedDiv(123, 1));
 
-  srandom(time(NULL));
   MemRandomize(reinterpret_cast<uint8*>(&num[0]), sizeof(num));
   MemRandomize(reinterpret_cast<uint8*>(&div[0]), sizeof(div));
   for (int j = 0; j < 1280; ++j) {
     if (div[j] == 0) {
       div[j] = 1280;
     }
     num[j] &= 0xffff;  // Clamp to avoid divide overflow.
   }
   for (int i = 0; i < benchmark_pixels_div1280_; ++i) {
     for (int j = 0; j < 1280; ++j) {
       result_opt[j] = libyuv::FixedDiv(num[j], div[j]);
     }
   }
   for (int j = 0; j < 1280; ++j) {
     result_c[j] = libyuv::FixedDiv_C(num[j], div[j]);
     EXPECT_NEAR(result_c[j], result_opt[j], 1);
   }
 }
 
 TEST_F(libyuvTest, TestFixedDiv_Opt) {
   int num[1280];
   int div[1280];
   int result_opt[1280];
   int result_c[1280];
 
-  srandom(time(NULL));
   MemRandomize(reinterpret_cast<uint8*>(&num[0]), sizeof(num));
   MemRandomize(reinterpret_cast<uint8*>(&div[0]), sizeof(div));
   for (int j = 0; j < 1280; ++j) {
     num[j] &= 4095;  // Make numerator smaller.
     div[j] &= 4095;  // Make divisor smaller.
     if (div[j] == 0) {
       div[j] = 1280;
     }
   }
 
@@ skipping 14 matching lines @@
     EXPECT_NEAR(result_c[j], result_opt[j], 1);
   }
 }
 
 TEST_F(libyuvTest, TestFixedDiv1_Opt) {
   int num[1280];
   int div[1280];
   int result_opt[1280];
   int result_c[1280];
 
-  srandom(time(NULL));
   MemRandomize(reinterpret_cast<uint8*>(&num[0]), sizeof(num));
   MemRandomize(reinterpret_cast<uint8*>(&div[0]), sizeof(div));
   for (int j = 0; j < 1280; ++j) {
     num[j] &= 4095;  // Make numerator smaller.
     div[j] &= 4095;  // Make divisor smaller.
     if (div[j] <= 1) {
       div[j] = 1280;
     }
   }
 
   int has_x86 = TestCpuFlag(kCpuHasX86);
   for (int i = 0; i < benchmark_pixels_div1280_; ++i) {
     if (has_x86) {
       for (int j = 0; j < 1280; ++j) {
         result_opt[j] = libyuv::FixedDiv1(num[j], div[j]);
       }
     } else {
       for (int j = 0; j < 1280; ++j) {
         result_opt[j] = libyuv::FixedDiv1_C(num[j], div[j]);
       }
     }
   }
   for (int j = 0; j < 1280; ++j) {
     result_c[j] = libyuv::FixedDiv1_C(num[j], div[j]);
     EXPECT_NEAR(result_c[j], result_opt[j], 1);
   }
 }
 
 }  // namespace libyuv