V_atod

/* V_atod(char const*) */

longdouble V_atod(char *param_1)

{
  byte *pbVar1;
  int iVar2;
  byte bVar3;
  int iVar4;
  int iVar5;
  longdouble lVar6;
  double dVar7;
  int local_24;
  
  bVar3 = *param_1;
  if (bVar3 == 0x2d) {
    bVar3 = param_1[1];
    local_24 = -1;
    param_1 = param_1 + 1;
  }
  else {
    local_24 = 1;
    if (bVar3 == 0x2b) {
      bVar3 = param_1[1];
      param_1 = param_1 + 1;
    }
  }
  if (bVar3 == 0x30) {
    if ((param_1[1] & 0xdfU) == 0x58) {
      pbVar1 = (byte *)(param_1 + 2);
      dVar7 = 0.0;
      while( true ) {
        while( true ) {
          bVar3 = *pbVar1;
          while( true ) {
            iVar5 = (int)(char)bVar3;
            pbVar1 = pbVar1 + 1;
            if (9 < iVar5 - 0x30U) break;
            bVar3 = *pbVar1;
            dVar7 = (double)iVar5 + -48.0 + dVar7 * 16.0;
          }
          if (5 < iVar5 - 0x61U) break;
          dVar7 = (double)iVar5 + -87.0 + dVar7 * 16.0;
        }
        if (5 < iVar5 - 0x41U) break;
        dVar7 = (double)iVar5 + -55.0 + dVar7 * 16.0;
      }
      goto LAB_0025cf43;
    }
  }
  else if (bVar3 == 0x27) {
    return (longdouble)(param_1[1] * local_24);
  }
  iVar4 = 0;
  dVar7 = 0.0;
  iVar5 = -1;
LAB_0025cf01:
  param_1 = param_1 + 1;
  if (bVar3 == 0x2e) {
    iVar2 = iVar4;
    if (iVar5 != -1) goto LAB_0025cf29;
  }
  else {
    if (9 < (int)(char)bVar3 - 0x30U) {
      if (((bVar3 & 0xdf) == 0x45) && (iVar2 = V_atoi64(param_1), iVar2 != 0)) {
        lVar6 = (longdouble)__pow_finite(0x4024000000000000,(double)iVar2);
        dVar7 = (double)lVar6 * dVar7;
      }
      if (iVar5 == -1) goto LAB_0025cf43;
LAB_0025cf29:
      if (iVar5 < iVar4) {
        do {
          dVar7 = dVar7 * 0.1;
          iVar4 = iVar4 + -1;
        } while (iVar4 != iVar5);
      }
LAB_0025cf43:
      return (longdouble)((double)local_24 * dVar7);
    }
    iVar4 = iVar4 + 1;
    dVar7 = dVar7 * 10.0 + (double)(int)(char)bVar3 + -48.0;
    iVar2 = iVar5;
  }
  bVar3 = *param_1;
  iVar5 = iVar2;
  goto LAB_0025cf01;
}