TempleOSCD_150216.ISO

Kernel/KMathB.CPP

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+F64 Clamp(F64 num,F64 lo,F64 hi)
+{//Clamp to F64 [] range.
+  if (num<lo)
+    return lo;
+  if (num>hi)
+    return hi;
+  return num;
+}
+
+F64 Min(F64 n1,F64 n2)
+{//Min of two F64s.
+  if (n1<=n2)
+    return n1;
+  else
+    return n2;
+}
+
+F64 Max(F64 n1,F64 n2)
+{//Max of two F64s.
+  if (n1>=n2)
+    return n1;
+  else
+    return n2;
+}
+
+F64 Pow10I64(I64 i)
+{//F64 integer powers of ten.
+  if (i>308)
+    return ì;
+  else if (i<-308)
+    return 0.0;
+  else
+    return pow10_I64[i+309];
+}
+
+U64 FloorU64(U64 num,U64 to)
+{//Integer multiples of num.
+  return num-num%to;
+}
+
+U64 CeilU64(U64 num,U64 to)
+{//Integer multiples of num.
+  num+=to-1;
+  return num-num%to;
+}
+
+I64 RoundI64(I64 num,I64 to)
+{//Integer multiples of num.
+  return num-num%to;
+}
+
+I64 FloorI64(I64 num,I64 to)
+{//Integer multiples of num.
+  if (num>=0)
+    return num-num%to;
+  else {
+    num++;
+    return num-num%to-to;
+  }
+}
+
+I64 CeilI64(I64 num,I64 to)
+{//Integer multiples of num.
+  if (num>=0) {
+    num+=to-1;
+    return num-num%to;
+  } else {
+    num+=to-1;
+    return num-num%to-to;
+  }
+}
+
+//See $LK,"::/Doc/Credits.TXT"$.
+I16 RandI16()
+{//Random I16.
+  I64 result=1664525*Fs->rand_seed+1013904223;
+  if (!Bt(&Fs->task_flags,TASKf_NONTIMER_RAND))
+    result^=GetTSC>>4;
+  Fs->rand_seed=result;
+  return result.i16[0];
+}
+
+U16 RandU16()
+{//Random U16.
+  I64 result=1664525*Fs->rand_seed+1013904223;
+  if (!Bt(&Fs->task_flags,TASKf_NONTIMER_RAND))
+    result^=GetTSC>>4;
+  Fs->rand_seed=result;
+  return result.u16[0];
+}
+
+I32 RandI32()
+{//Random I32.
+  I64 result=1664525*Fs->rand_seed+1013904223;
+  if (!Bt(&Fs->task_flags,TASKf_NONTIMER_RAND))
+    result^=GetTSC>>4;
+  Fs->rand_seed=result;
+  return result.i32[0];
+}
+
+U32 RandU32()
+{//Random U32.
+  I64 result=1664525*Fs->rand_seed+1013904223;
+  if (!Bt(&Fs->task_flags,TASKf_NONTIMER_RAND))
+    result^=GetTSC>>4;
+  Fs->rand_seed=result;
+  return result.u32[0];
+}
+
+I64 RandI64()
+{//Random I64.
+  I64 result=1664525*Fs->rand_seed+1013904223;
+  if (!Bt(&Fs->task_flags,TASKf_NONTIMER_RAND))
+    result^=GetTSC>>4;
+  Fs->rand_seed=1664525*result+1013904223;
+  return result<<32+Fs->rand_seed&0xFFFFFFFF;
+}
+
+U64 RandU64()
+{//Random U64.
+  I64 result=1664525*Fs->rand_seed+1013904223;
+  if (!Bt(&Fs->task_flags,TASKf_NONTIMER_RAND))
+    result^=GetTSC>>4;
+  Fs->rand_seed=1664525*result+1013904223;
+  return result<<32+Fs->rand_seed&0xFFFFFFFF;
+}
+
+F64 Rand()
+{//Random F64.
+  I64 result=RandI64&0x3FFFFFFFFFFFFFFF;
+  return result/ToF64(0x4000000000000000);
+}
+
+I64 Seed(I64 seed=0,CTask *task=NULL)
+{//Set $LK,"Rand",A="MN:Rand"$() seed. Zero for timer-based.
+  if (!task) task=Fs;
+  if (seed) {
+    LBts(&task->task_flags,TASKf_NONTIMER_RAND);
+    return task->rand_seed=seed;
+  } else {
+    LBtr(&task->task_flags,TASKf_NONTIMER_RAND);
+    return task->rand_seed=GetTSC>>4;
+  }
+}