<?php

/**
 * Class ParagonIE_Sodium_Core32_Int32
 *
 * Encapsulates a 32-bit integer.
 *
 * These are immutable. It always returns a new instance.
 */
class ParagonIE_Sodium_Core32_Int32
{
    /**
     * @var array<int, int> - two 16-bit integers
     *
     * 0 is the higher 16 bits
     * 1 is the lower 16 bits
     */
    public $limbs = array(0, 0);

    /**
     * @var int
     */
    public $overflow = 0;

    /**
     * @var bool
     */
    public $unsignedInt = false;

    /**
     * ParagonIE_Sodium_Core32_Int32 constructor.
     * @param array $array
     * @param bool $unsignedInt
     */
    public function __construct($array = array(0, 0), $unsignedInt = false)
    {
        $this->limbs = array(
            (int) $array[0],
            (int) $array[1]
        );
        $this->overflow = 0;
        $this->unsignedInt = $unsignedInt;
    }

    /**
     * Adds two int32 objects
     *
     * @param ParagonIE_Sodium_Core32_Int32 $addend
     * @return ParagonIE_Sodium_Core32_Int32
     */
    public function addInt32(ParagonIE_Sodium_Core32_Int32 $addend)
    {
        $i0 = $this->limbs[0];
        $i1 = $this->limbs[1];
        $j0 = $addend->limbs[0];
        $j1 = $addend->limbs[1];

        $r1 = $i1 + ($j1 & 0xffff);
        $carry = $r1 >> 16;

        $r0 = $i0 + ($j0 & 0xffff) + $carry;
        $carry = $r0 >> 16;

        $r0 &= 0xffff;
        $r1 &= 0xffff;

        $return = new ParagonIE_Sodium_Core32_Int32(
            array($r0, $r1)
        );
        $return->overflow = $carry;
        $return->unsignedInt = $this->unsignedInt;
        return $return;
    }

    /**
     * Adds a normal integer to an int32 object
     *
     * @param int $int
     * @return ParagonIE_Sodium_Core32_Int32
     * @throws SodiumException
     * @throws TypeError
     */
    public function addInt($int)
    {
        ParagonIE_Sodium_Core32_Util::declareScalarType($int, 'int', 1);
        /** @var int $int */
        $int = (int) $int;

        $int = (int) $int;

        $i0 = $this->limbs[0];
        $i1 = $this->limbs[1];

        $r1 = $i1 + ($int & 0xffff);
        $carry = $r1 >> 16;

        $r0 = $i0 + (($int >> 16) & 0xffff) + $carry;
        $carry = $r0 >> 16;
        $r0 &= 0xffff;
        $r1 &= 0xffff;
        $return = new ParagonIE_Sodium_Core32_Int32(
            array($r0, $r1)
        );
        $return->overflow = $carry;
        $return->unsignedInt = $this->unsignedInt;
        return $return;
    }

    /**
     * @param int $b
     * @return int
     */
    public function compareInt($b = 0)
    {
        $gt = 0;
        $eq = 1;

        $i = 2;
        $j = 0;
        while ($i > 0) {
            --$i;
            /** @var int $x1 */
            $x1 = $this->limbs[$i];
            /** @var int $x2 */
            $x2 = ($b >> ($j << 4)) & 0xffff;
            /** @var int $gt */
            $gt |= (($x2 - $x1) >> 8) & $eq;
            /** @var int $eq */
            $eq &= (($x2 ^ $x1) - 1) >> 8;
        }
        return ($gt + $gt - $eq) + 1;
    }

    /**
     * @param int $m
     * @return ParagonIE_Sodium_Core32_Int32
     */
    public function mask($m = 0)
    {
        /** @var int $hi */
        $hi = ((int) $m >> 16);
        $hi &= 0xffff;
        /** @var int $lo */
        $lo = ((int) $m) & 0xffff;
        return new ParagonIE_Sodium_Core32_Int32(
            array(
                (int) ($this->limbs[0] & $hi),
                (int) ($this->limbs[1] & $lo)
            ),
            $this->unsignedInt
        );
    }

    /**
     * @param array<int, int> $a
     * @param array<int, int> $b
     * @param int $baseLog2
     * @return array<int, int>
     */
    public function multiplyLong(array $a, array $b, $baseLog2 = 16)
    {
        $a_l = count($a);
        $b_l = count($b);
        /** @var array<int, int> $r */
        $r = array_fill(0, $a_l + $b_l + 1, 0);
        $base = 1 << $baseLog2;
        for ($i = 0; $i < $a_l; ++$i) {
            $a_i = $a[$i];
            for ($j = 0; $j < $a_l; ++$j) {
                $b_j = $b[$j];
                $product = ($a_i * $b_j) + $r[$i + $j];
                $carry = ((int) $product >> $baseLog2 & 0xffff);
                $r[$i + $j] = ((int) $product - (int) ($carry * $base)) & 0xffff;
                $r[$i + $j + 1] += $carry;
            }
        }
        return array_slice($r, 0, 5);
    }

    /**
     * @param int $int
     * @return ParagonIE_Sodium_Core32_Int32
     */
    public function mulIntFast($int)
    {
        // Handle negative numbers
        $aNeg = ($this->limbs[0] >> 15) & 1;
        $bNeg = ($int >> 31) & 1;
        $a = array_reverse($this->limbs);
        $b = array(
            $int & 0xffff,
            ($int >> 16) & 0xffff
        );
        if ($aNeg) {
            for ($i = 0; $i < 2; ++$i) {
                $a[$i] = ($a[$i] ^ 0xffff) & 0xffff;
            }
            ++$a[0];
        }
        if ($bNeg) {
            for ($i = 0; $i < 2; ++$i) {
                $b[$i] = ($b[$i] ^ 0xffff) & 0xffff;
            }
            ++$b[0];
        }
        // Multiply
        $res = $this->multiplyLong($a, $b);

        // Re-apply negation to results
        if ($aNeg !== $bNeg) {
            for ($i = 0; $i < 2; ++$i) {
                $res[$i] = (0xffff ^ $res[$i]) & 0xffff;
            }
            // Handle integer overflow
            $c = 1;
            for ($i = 0; $i < 2; ++$i) {
                $res[$i] += $c;
                $c = $res[$i] >> 16;
                $res[$i] &= 0xffff;
            }
        }

        // Return our values
        $return = new ParagonIE_Sodium_Core32_Int32();
        $return->limbs = array(
            $res[1] & 0xffff,
            $res[0] & 0xffff
        );
        if (count($res) > 2) {
            $return->overflow = $res[2] & 0xffff;
        }
        $return->unsignedInt = $this->unsignedInt;
        return $return;
    }

    /**
     * @param ParagonIE_Sodium_Core32_Int32 $right
     * @return ParagonIE_Sodium_Core32_Int32
     */
    public function mulInt32Fast(ParagonIE_Sodium_Core32_Int32 $right)
    {
        $aNeg = ($this->limbs[0] >> 15) & 1;
        $bNeg = ($right->limbs[0] >> 15) & 1;

        $a = array_reverse($this->limbs);
        $b = array_reverse($right->limbs);
        if ($aNeg) {
            for ($i = 0; $i < 2; ++$i) {
                $a[$i] = ($a[$i] ^ 0xffff) & 0xffff;
            }
            ++$a[0];
        }
        if ($bNeg) {
            for ($i = 0; $i < 2; ++$i) {
                $b[$i] = ($b[$i] ^ 0xffff) & 0xffff;
            }
            ++$b[0];
        }
        $res = $this->multiplyLong($a, $b);
        if ($aNeg !== $bNeg) {
            if ($aNeg !== $bNeg) {
                for ($i = 0; $i < 2; ++$i) {
                    $res[$i] = ($res[$i] ^ 0xffff) & 0xffff;
                }
                $c = 1;
                for ($i = 0; $i < 2; ++$i) {
                    $res[$i] += $c;
                    $c = $res[$i] >> 16;
                    $res[$i] &= 0xffff;
                }
            }
        }
        $return = new ParagonIE_Sodium_Core32_Int32();
        $return->limbs = array(
            $res[1] & 0xffff,
            $res[0] & 0xffff
        );
        if (count($res) > 2) {
            $return->overflow = $res[2];
        }
        return $return;
    }

    /**
     * @param int $int
     * @param int $size
     * @return ParagonIE_Sodium_Core32_Int32
     * @throws SodiumException
     * @throws TypeError
     */
    public function mulInt($int = 0, $size = 0)
    {
        ParagonIE_Sodium_Core32_Util::declareScalarType($int, 'int', 1);
        ParagonIE_Sodium_Core32_Util::declareScalarType($size, 'int', 2);
        if (ParagonIE_Sodium_Compat::$fastMult) {
            return $this->mulIntFast((int) $int);
        }
        /** @var int $int */
        $int = (int) $int;
        /** @var int $size */
        $size = (int) $size;

        if (!$size) {
            $size = 31;
        }
        /** @var int $size */

        $a = clone $this;
        $return = new ParagonIE_Sodium_Core32_Int32();
        $return->unsignedInt = $this->unsignedInt;

        // Initialize:
        $ret0 = 0;
        $ret1 = 0;
        $a0 = $a->limbs[0];
        $a1 = $a->limbs[1];

        /** @var int $size */
        /** @var int $i */
        for ($i = $size; $i >= 0; --$i) {
            $m = (int) (-($int & 1));
            $x0 = $a0 & $m;
            $x1 = $a1 & $m;

            $ret1 += $x1;
            $c = $ret1 >> 16;

            $ret0 += $x0 + $c;

            $ret0 &= 0xffff;
            $ret1 &= 0xffff;

            $a1 = ($a1 << 1);
            $x1 = $a1 >> 16;
            $a0 = ($a0 << 1) | $x1;
            $a0 &= 0xffff;
            $a1 &= 0xffff;
            $int >>= 1;
        }
        $return->limbs[0] = $ret0;
        $return->limbs[1] = $ret1;
        return $return;
    }

    /**
     * @param ParagonIE_Sodium_Core32_Int32 $int
     * @param int $size
     * @return ParagonIE_Sodium_Core32_Int32
     * @throws SodiumException
     * @throws TypeError
     */
    public function mulInt32(ParagonIE_Sodium_Core32_Int32 $int, $size = 0)
    {
        ParagonIE_Sodium_Core32_Util::declareScalarType($size, 'int', 2);
        if (ParagonIE_Sodium_Compat::$fastMult) {
            return $this->mulInt32Fast($int);
        }
        if (!$size) {
            $size = 31;
        }
        /** @var int $size */

        $a = clone $this;
        $b = clone $int;
        $return = new ParagonIE_Sodium_Core32_Int32();
        $return->unsignedInt = $this->unsignedInt;

        // Initialize:
        $ret0 = 0;
        $ret1 = 0;
        $a0 = $a->limbs[0];
        $a1 = $a->limbs[1];
        $b0 = $b->limbs[0];
        $b1 = $b->limbs[1];

        /** @var int $size */
        /** @var int $i */
        for ($i = $size; $i >= 0; --$i) {
            $m = (int) (-($b1 & 1));
            $x0 = $a0 & $m;
            $x1 = $a1 & $m;

            $ret1 += $x1;
            $c = $ret1 >> 16;

            $ret0 += $x0 + $c;

            $ret0 &= 0xffff;
            $ret1 &= 0xffff;

            $a1 = ($a1 << 1);
            $x1 = $a1 >> 16;
            $a0 = ($a0 << 1) | $x1;
            $a0 &= 0xffff;
            $a1 &= 0xffff;

            $x0 = ($b0 & 1) << 16;
            $b0 = ($b0 >> 1);
            $b1 = (($b1 | $x0) >> 1);

            $b0 &= 0xffff;
            $b1 &= 0xffff;

        }
        $return->limbs[0] = $ret0;
        $return->limbs[1] = $ret1;

        return $return;
    }

    /**
     * OR this 32-bit integer with another.
     *
     * @param ParagonIE_Sodium_Core32_Int32 $b
     * @return ParagonIE_Sodium_Core32_Int32
     */
    public function orInt32(ParagonIE_Sodium_Core32_Int32 $b)
    {
        $return = new ParagonIE_Sodium_Core32_Int32();
        $return->unsignedInt = $this->unsignedInt;
        $return->limbs = array(
            (int) ($this->limbs[0] | $b->limbs[0]),
            (int) ($this->limbs[1] | $b->limbs[1])
        );
        /** @var int overflow */
        $return->overflow = $this->overflow | $b->overflow;
        return $return;
    }

    /**
     * @param int $b
     * @return bool
     */
    public function isGreaterThan($b = 0)
    {
        return $this->compareInt($b) > 0;
    }

    /**
     * @param int $b
     * @return bool
     */
    public function isLessThanInt($b = 0)
    {
        return $this->compareInt($b) < 0;
    }

    /**
     * @param int $c
     * @return ParagonIE_Sodium_Core32_Int32
     * @throws SodiumException
     * @throws TypeError
     * @psalm-suppress MixedArrayAccess
     */
    public function rotateLeft($c = 0)
    {
        ParagonIE_Sodium_Core32_Util::declareScalarType($c, 'int', 1);
        /** @var int $c */
        $c = (int) $c;

        $return = new ParagonIE_Sodium_Core32_Int32();
        $return->unsignedInt = $this->unsignedInt;
        $c &= 31;
        if ($c === 0) {
            // NOP, but we want a copy.
            $return->limbs = $this->limbs;
        } else {
            /** @var int $c */

            /** @var int $idx_shift */
            $idx_shift = ($c >> 4) & 1;

            /** @var int $sub_shift */
            $sub_shift = $c & 15;

            /** @var array<int, int> $limbs */
            $limbs =& $return->limbs;

            /** @var array<int, int> $myLimbs */
            $myLimbs =& $this->limbs;

            for ($i = 1; $i >= 0; --$i) {
                /** @var int $j */
                $j = ($i + $idx_shift) & 1;
                /** @var int $k */
                $k = ($i + $idx_shift + 1) & 1;
                $limbs[$i] = (int) (
                    (
                        ((int) ($myLimbs[$j]) << $sub_shift)
                            |
                        ((int) ($myLimbs[$k]) >> (16 - $sub_shift))
                    ) & 0xffff
                );
            }
        }
        return $return;
    }

    /**
     * Rotate to the right
     *
     * @param int $c
     * @return ParagonIE_Sodium_Core32_Int32
     * @throws SodiumException
     * @throws TypeError
     * @psalm-suppress MixedArrayAccess
     */
    public function rotateRight($c = 0)
    {
        ParagonIE_Sodium_Core32_Util::declareScalarType($c, 'int', 1);
        /** @var int $c */
        $c = (int) $c;

        $return = new ParagonIE_Sodium_Core32_Int32();
        $return->unsignedInt = $this->unsignedInt;
        $c &= 31;
        /** @var int $c */
        if ($c === 0) {
            // NOP, but we want a copy.
            $return->limbs = $this->limbs;
        } else {
            /** @var int $c */

            /** @var int $idx_shift */
            $idx_shift = ($c >> 4) & 1;

            /** @var int $sub_shift */
            $sub_shift = $c & 15;

            /** @var array<int, int> $limbs */
            $limbs =& $return->limbs;

            /** @var array<int, int> $myLimbs */
            $myLimbs =& $this->limbs;

            for ($i = 1; $i >= 0; --$i) {
                /** @var int $j */
                $j = ($i - $idx_shift) & 1;
                /** @var int $k */
                $k = ($i - $idx_shift - 1) & 1;
                $limbs[$i] = (int) (
                    (
                        ((int) ($myLimbs[$j]) >> (int) ($sub_shift))
                            |
                        ((int) ($myLimbs[$k]) << (16 - (int) ($sub_shift)))
                    ) & 0xffff
                );
            }
        }
        return $return;
    }

    /**
     * @param bool $bool
     * @return self
     */
    public function setUnsignedInt($bool = false)
    {
        $this->unsignedInt = !empty($bool);
        return $this;
    }

    /**
     * @param int $c
     * @return ParagonIE_Sodium_Core32_Int32
     * @throws SodiumException
     * @throws TypeError
     */
    public function shiftLeft($c = 0)
    {
        ParagonIE_Sodium_Core32_Util::declareScalarType($c, 'int', 1);
        /** @var int $c */
        $c = (int) $c;

        $return = new ParagonIE_Sodium_Core32_Int32();
        $return->unsignedInt = $this->unsignedInt;
        $c &= 63;
        /** @var int $c */
        if ($c === 0) {
            $return->limbs = $this->limbs;
        } elseif ($c < 0) {
            /** @var int $c */
            return $this->shiftRight(-$c);
        } else {
            /** @var int $c */
            /** @var int $tmp */
            $tmp = $this->limbs[1] << $c;
            $return->limbs[1] = (int)($tmp & 0xffff);
            /** @var int $carry */
            $carry = $tmp >> 16;

            /** @var int $tmp */
            $tmp = ($this->limbs[0] << $c) | ($carry & 0xffff);
            $return->limbs[0] = (int) ($tmp & 0xffff);
        }
        return $return;
    }

    /**
     * @param int $c
     * @return ParagonIE_Sodium_Core32_Int32
     * @throws SodiumException
     * @throws TypeError
     * @psalm-suppress MixedAssignment
     * @psalm-suppress MixedOperand
     */
    public function shiftRight($c = 0)
    {
        ParagonIE_Sodium_Core32_Util::declareScalarType($c, 'int', 1);
        /** @var int $c */
        $c = (int) $c;

        $return = new ParagonIE_Sodium_Core32_Int32();
        $return->unsignedInt = $this->unsignedInt;
        $c &= 63;
        /** @var int $c */
        if ($c >= 16) {
            $return->limbs = array(
                (int) ($this->overflow & 0xffff),
                (int) ($this->limbs[0])
            );
            $return->overflow = $this->overflow >> 16;
            return $return->shiftRight($c & 15);
        }
        if ($c === 0) {
            $return->limbs = $this->limbs;
        } elseif ($c < 0) {
            /** @var int $c */
            return $this->shiftLeft(-$c);
        } else {
            if (!is_int($c)) {
                throw new TypeError();
            }
            /** @var int $c */
            // $return->limbs[0] = (int) (($this->limbs[0] >> $c) & 0xffff);
            $carryLeft = (int) ($this->overflow & ((1 << ($c + 1)) - 1));
            $return->limbs[0] = (int) ((($this->limbs[0] >> $c) | ($carryLeft << (16 - $c))) & 0xffff);
            $carryRight = (int) ($this->limbs[0] & ((1 << ($c + 1)) - 1));
            $return->limbs[1] = (int) ((($this->limbs[1] >> $c) | ($carryRight << (16 - $c))) & 0xffff);
            $return->overflow >>= $c;
        }
        return $return;
    }

    /**
     * Subtract a normal integer from an int32 object.
     *
     * @param int $int
     * @return ParagonIE_Sodium_Core32_Int32
     * @throws SodiumException
     * @throws TypeError
     */
    public function subInt($int)
    {
        ParagonIE_Sodium_Core32_Util::declareScalarType($int, 'int', 1);
        /** @var int $int */
        $int = (int) $int;

        $return = new ParagonIE_Sodium_Core32_Int32();
        $return->unsignedInt = $this->unsignedInt;

        /** @var int $tmp */
        $tmp = $this->limbs[1] - ($int & 0xffff);
        /** @var int $carry */
        $carry = $tmp >> 16;
        $return->limbs[1] = (int) ($tmp & 0xffff);

        /** @var int $tmp */
        $tmp = $this->limbs[0] - (($int >> 16) & 0xffff) + $carry;
        $return->limbs[0] = (int) ($tmp & 0xffff);
        return $return;
    }

    /**
     * Subtract two int32 objects from each other
     *
     * @param ParagonIE_Sodium_Core32_Int32 $b
     * @return ParagonIE_Sodium_Core32_Int32
     */
    public function subInt32(ParagonIE_Sodium_Core32_Int32 $b)
    {
        $return = new ParagonIE_Sodium_Core32_Int32();
        $return->unsignedInt = $this->unsignedInt;

        /** @var int $tmp */
        $tmp = $this->limbs[1] - ($b->limbs[1] & 0xffff);
        /** @var int $carry */
        $carry = $tmp >> 16;
        $return->limbs[1] = (int) ($tmp & 0xffff);

        /** @var int $tmp */
        $tmp = $this->limbs[0] - ($b->limbs[0] & 0xffff) + $carry;
        $return->limbs[0] = (int) ($tmp & 0xffff);
        return $return;
    }

    /**
     * XOR this 32-bit integer with another.
     *
     * @param ParagonIE_Sodium_Core32_Int32 $b
     * @return ParagonIE_Sodium_Core32_Int32
     */
    public function xorInt32(ParagonIE_Sodium_Core32_Int32 $b)
    {
        $return = new ParagonIE_Sodium_Core32_Int32();
        $return->unsignedInt = $this->unsignedInt;
        $return->limbs = array(
            (int) ($this->limbs[0] ^ $b->limbs[0]),
            (int) ($this->limbs[1] ^ $b->limbs[1])
        );
        return $return;
    }

    /**
     * @param int $signed
     * @return self
     * @throws SodiumException
     * @throws TypeError
     */
    public static function fromInt($signed)
    {
        ParagonIE_Sodium_Core32_Util::declareScalarType($signed, 'int', 1);;
        /** @var int $signed */
        $signed = (int) $signed;

        return new ParagonIE_Sodium_Core32_Int32(
            array(
                (int) (($signed >> 16) & 0xffff),
                (int) ($signed & 0xffff)
            )
        );
    }

    /**
     * @param string $string
     * @return self
     * @throws SodiumException
     * @throws TypeError
     */
    public static function fromString($string)
    {
        ParagonIE_Sodium_Core32_Util::declareScalarType($string, 'string', 1);
        $string = (string) $string;
        if (ParagonIE_Sodium_Core32_Util::strlen($string) !== 4) {
            throw new RangeException(
                'String must be 4 bytes; ' . ParagonIE_Sodium_Core32_Util::strlen($string) . ' given.'
            );
        }
        $return = new ParagonIE_Sodium_Core32_Int32();

        $return->limbs[0]  = (int) ((ParagonIE_Sodium_Core32_Util::chrToInt($string[0]) & 0xff) << 8);
        $return->limbs[0] |= (ParagonIE_Sodium_Core32_Util::chrToInt($string[1]) & 0xff);
        $return->limbs[1]  = (int) ((ParagonIE_Sodium_Core32_Util::chrToInt($string[2]) & 0xff) << 8);
        $return->limbs[1] |= (ParagonIE_Sodium_Core32_Util::chrToInt($string[3]) & 0xff);
        return $return;
    }

    /**
     * @param string $string
     * @return self
     * @throws SodiumException
     * @throws TypeError
     */
    public static function fromReverseString($string)
    {
        ParagonIE_Sodium_Core32_Util::declareScalarType($string, 'string', 1);
        $string = (string) $string;
        if (ParagonIE_Sodium_Core32_Util::strlen($string) !== 4) {
            throw new RangeException(
                'String must be 4 bytes; ' . ParagonIE_Sodium_Core32_Util::strlen($string) . ' given.'
            );
        }
        $return = new ParagonIE_Sodium_Core32_Int32();

        $return->limbs[0]  = (int) ((ParagonIE_Sodium_Core32_Util::chrToInt($string[3]) & 0xff) << 8);
        $return->limbs[0] |= (ParagonIE_Sodium_Core32_Util::chrToInt($string[2]) & 0xff);
        $return->limbs[1]  = (int) ((ParagonIE_Sodium_Core32_Util::chrToInt($string[1]) & 0xff) << 8);
        $return->limbs[1] |= (ParagonIE_Sodium_Core32_Util::chrToInt($string[0]) & 0xff);
        return $return;
    }

    /**
     * @return array<int, int>
     */
    public function toArray()
    {
        return array((int) ($this->limbs[0] << 16 | $this->limbs[1]));
    }

    /**
     * @return string
     * @throws TypeError
     */
    public function toString()
    {
        return
            ParagonIE_Sodium_Core32_Util::intToChr(($this->limbs[0] >> 8) & 0xff) .
            ParagonIE_Sodium_Core32_Util::intToChr($this->limbs[0] & 0xff) .
            ParagonIE_Sodium_Core32_Util::intToChr(($this->limbs[1] >> 8) & 0xff) .
            ParagonIE_Sodium_Core32_Util::intToChr($this->limbs[1] & 0xff);
    }

    /**
     * @return int
     */
    public function toInt()
    {
        return (int) (
            (($this->limbs[0] & 0xffff) << 16)
                |
            ($this->limbs[1] & 0xffff)
        );
    }

    /**
     * @return ParagonIE_Sodium_Core32_Int32
     */
    public function toInt32()
    {
        $return = new ParagonIE_Sodium_Core32_Int32();
        $return->limbs[0] = (int) ($this->limbs[0] & 0xffff);
        $return->limbs[1] = (int) ($this->limbs[1] & 0xffff);
        $return->unsignedInt = $this->unsignedInt;
        $return->overflow = (int) ($this->overflow & 0x7fffffff);
        return $return;
    }

    /**
     * @return ParagonIE_Sodium_Core32_Int64
     */
    public function toInt64()
    {
        $return = new ParagonIE_Sodium_Core32_Int64();
        $return->unsignedInt = $this->unsignedInt;
        if ($this->unsignedInt) {
            $return->limbs[0] += (($this->overflow >> 16) & 0xffff);
            $return->limbs[1] += (($this->overflow) & 0xffff);
        } else {
            $neg = -(($this->limbs[0] >> 15) & 1);
            $return->limbs[0] = (int)($neg & 0xffff);
            $return->limbs[1] = (int)($neg & 0xffff);
        }
        $return->limbs[2] = (int) ($this->limbs[0] & 0xffff);
        $return->limbs[3] = (int) ($this->limbs[1] & 0xffff);
        return $return;
    }

    /**
     * @return string
     * @throws TypeError
     */
    public function toReverseString()
    {
        return ParagonIE_Sodium_Core32_Util::intToChr($this->limbs[1] & 0xff) .
            ParagonIE_Sodium_Core32_Util::intToChr(($this->limbs[1] >> 8) & 0xff) .
            ParagonIE_Sodium_Core32_Util::intToChr($this->limbs[0] & 0xff) .
            ParagonIE_Sodium_Core32_Util::intToChr(($this->limbs[0] >> 8) & 0xff);
    }

    /**
     * @return string
     */
    public function __toString()
    {
        try {
            return $this->toString();
        } catch (TypeError $ex) {
            // PHP engine can't handle exceptions from __toString()
            return '';
        }
    }
}

Affy Pharma Pvt Ltd

Pharmaceutical, Nutra, Cosmetics Manufacturer in India

GENERIC MARKETING

SPERA Medicare

SPEROXIME

POWDER FOR ORAL SUSPENSION
30ML (HDPE BOTTLE)

Composition

Cefpodoxime 50mg/5ml

Indications & Uses

UTIs, LRTs

SPEROXIME-CV

POWDER FOR ORAL SUSPENSION
30ML (GLASS BOTTLE)

Composition

Cefpodoxime 50mg + Potassium Clavulanate 31.25mg/ 5ml

Indications & Uses

Upper & lower respiratory infections, Uncomplicated skin infections, Urinary Tract Infections

SPERACLAV

POWDER FOR ORAL SUSPENSION
30ML (GLASS +HDPE BOTTLE)

Composition

Amoxycillin 200mg + Potassium clavulanate 28.50 mg/ 5ml

Indications & Uses

Community Acquired Pneumonia, Acute Exacerbations of Chronic Bronchitis, Upper Respiratory Tract Infections, Urinary Tract Infections

SPERIXIME-CV

POWDER FOR ORAL SUSPENSION

30ML (GLASS BOTTLE)

Composition

Cefixime 50mg + Potassium clavulanate 31.25mg/5ml

Indications & Uses

Urinary Tract Inefctions, AECB, Otitis Media, Typhoid

SPERIXIME

POWDER FOR ORAL SUSPENSION
30ML (HDPE BOTTLE)

Composition

Cefixime 50mg/5ml

Indications & Uses

Urinary Tract Inefctions, Gastroenteritis

SPAZIT

ORAL SUSPENSION
15 ml

Composition

Azithromycin 200mg/5ml

Indications & Uses

Community Acquired Pneumonia, Acute Exacerbations of Chronic Bronchitis,

SPENOMOL-DS

ORAL SUSPENSION
60 ml

Composition

Paracetamol 250mg/5ml

Indications & Uses

Fever, Pain

SPENOMOL–M

ORAL SUSPENSION
60 ml

Composition

Paracetamol 125mg + Mefenamic Acid 50mg/5ml

Indications & Uses

Pain, Fever

SPEROF

ORAL SUSPENSION
30 ml

Composition

Ofloxacin 50mg/5ml

Indications & Uses

Acute exacerbations of chronic Bronchitis, Diarrhoea

SPENOMOL-CP

SYRUP
60 ml

Composition

Paracetamol 125mg + PPH 5mg + Cetirizine HCI 2mg/5ml

Indications & Uses

Fever, common cold & Flu

PROBILIN

ORAL SUSPENSION
200ml

Composition

Cyproheptadine HCI 2mg + Tricholine citrate 0.275mg/5ml

Indications & Uses

Stimulate Apetite, Induces Weight Gain, Cure Allergies

SPERAZOLE-DSR

CAPSULES ( HARD GELATIN)
10X10 (Alu-Alu)

Composition

Pantoprazole 40mg (EC) + Domperidone 30mg (SR)

Indications & Uses

GERD, Dyspepsia, Acid Peptic Disorders, Gastritis

SPERAB-DSR

CAPSULES ( HARD GELATIN)
11X10 (Alu-Alu)

Composition

Rabeprazole 20mg (EC) + Domperidone SR

Indications & Uses

GERD, Dyspepsia, Acid Peptic Disorders, Gastritis

SPERAZOLE 40

INJECTION

40ml

Composition

Pantoprazole Sodium 40mg + NaCL

Indications & Uses

Acid-peptic disorders in hospitalized patients, Zollinger – Ellison Syndrome, Treatment of GERD Associated with Erasive Esophagitis, GL Bleed

COOLRICH

SUSPENSION
170ml

Composition

Activated Dimethicone 25mg + Magnesium Hydroxide 200mg+ Aluminium Hydroxide Gel 200mg/10ml

Indications & Uses

Heartburn, Acid Indigestion

SPERAZYME

SYRUP
200ml

Composition

Alpha Amylase (1:2000) 50mg, Pepsin(1:3000) 10mg/5ml

Indications & Uses

Dyspepsia, Flatulence, Anorexia, Pancreatic Insufficiency

SPUR-ON

CAPSULES (HARD GELATIN)
10X3X10

Composition

Vitamin C 75mg + Vitamin B12 5mcg + Carbonyl Iron 100mg + Folic Acid 1.5mg + Zinc Sulphate 61.8mg

Indications & Uses

Hyphocromic Anemia in Pregnancy, Chronic and / or Acute Blood Loss, Post-gynaesurgery, Iron Deficiency Anemia

SP-D3 60K

CAPSULES (SOFT GELATIN)
10X1X4

Composition

Cholecalciferol 60000 UI

Indications & Uses

Osteoporosis, Osteoarthritis, Musculoskeletal Pain, Type- 2 Diabetes, Menstrual Irregularities, Pre-eclampsia, IUGR

ERABONA

ORAL SUSPENSION
200ml

Composition

Calcium Carbonate 625mg, Vitamin D3 125 IU/5ml

Indications & Uses

Osteomalacia, Osteoporosis, Fractures, Premenstrual Syndrome

IRO-SPUR

SYRUP (IRON TONIC)
300 ml

Composition

Iron (III) Hydroxide Polymaltose 50mg, Folic Acid 0.5mg/15ml

Indications & Uses

Pregnancy and lactation, Iron Deficiency Anaemia, Anaemia due to Excessive Haemorrhage, Anaemia Associated with Infections and Malignant Disease

CALANTE-Z

CAPSULES (SOFT GELATIN)
5X2X15

Composition

Calcitriol 0.25mcg + Calcium Carbonate 500mg + Zinc Sulphate 7.5mg

Indications & Uses

Osteoporosis, Hypoparathyroidism, Pregnancy & Lactation, Premenstrual Syndrome

SPERA SPAS

TABLETS
20X10

Composition

Mefenamic Acid 250mg + Dicyclomine HCI 10mg

Indications & Uses

Dysmenorrhea, Irritable Bowel Syndrome, Colic and Bladder Spasm, Abdominal Pain

SPERAFEN

TABLETS (BLISTERS)
20X10

Composition

Nimeulide 100mg + Paracetamo; 325mg

Indications & Uses

Arthritis Pain, Soft Tissue Trauma Including Sprains, Musculoskeletal Pain, Pain Following Dental Extraction

PARADOL FORTE

TABLETS

20X10

Composition

Tramadol 37.5mg + Paracetamol 325mg

Indications & Uses

Chronic Back Pain, Osteoarthritis, Postoperative Pain

DIRABEN GEL

GEL
30g

Composition

Diclofenac Diethylamine 1.16% w/w + Oleum Linseed Oil 3 % w/w + Menthol 5% w/w +Methyl Salicylate 10% w/w

Indications & Uses

Sprains & Strains, Lower Back Pain, Joint Pain, Knee Pain

ULTISOFT

CREAM
20g

Composition

Urea 10% +Lactic Acid 10% + Propylene Glycol 10% + Liquid Paraffin 10%

Indications & Uses

Foot Cracks, Keratolytic

PERAZOB

OINTMENT
15g

Composition

Clotrimazole 1% w/w + Beclomethasone Dipropionate 0.025% w/w + Neomycin 0.5% w/w

Indications & Uses

Eczema, Psoriasis, Corticosteroid Responsive Dermatoses

SPARKETO

LOTION
100 ml

Composition

Ketoconazole 2% w/v

Indications & Uses

Pityriasis, Dandruff

SPARKETO-Z

LOTION
100 ml

Composition

Ketoconazole Shampoo 2% w/v + ZPTO 1% w/v

Indications & Uses

Pityriasis, Dandruff

SPARKETO

SOAP
75g

Composition

Ketoconazole 1% w/w

Indications & Uses

Tinea Versicolor, Prophylaxis of Pityriasis Versicolor

SPUKA

TABLETS
20X1X1

Composition

Fluconazole 200mg

Indications & Uses

Vaginal Candidiasis, Brochopulmonary Infections, Candiduria, Tinea Pedis, Corposis, Cruris, Versicolor

VITALAND

SYRUP
200ml

Composition

L-Iysine HCI 25mg + Vitamin B1 2.5mg + Vitamin B2 2.5mg + Vitamin B6 0.75mg + D-panthenol 3mg +Niacinamide 25mg + Mecobalamin 2mcg/10ml

Indications & Uses

Sub-optimal Growth, Poor Weight Gain, Malnutrition, Prolonged Illness

LYCOZIDE PLUS

SYRUP
225ml

Composition

Each 10ml Contains: Lycopene 6% 1000mcg + Vitamin A Palmitate 2500 IU + Vitamin E 10 IU + Ascorbic Acid 50mg + Selenium (as Sodium Selenate) 35mcg + Zinc (As Zinc Gluconate) 3mg + Manganese (as Manganese Gluconate) 2mg + Iodine ( As Potassium Iodine) 100mcg + Copper (As Copper Sulphate0 500mcg + Thiamine HCI 2mg + Riboflavine 3mg + Pyridoxine HCI 1.5mg

Indications & Uses

Tiredness, Stress, Feeling of Weakness, Vitality Deficiency

DENUM

CAPSULES (SOFT GELATIN)
10X1X10

Composition

Antioxidant, Multivitamin & Multiminerals

Indications & Uses

Tiredness, Stress, Feeling of Weakness, Vitality Deficiency

NATOW

CAPSULES (SOFT GELATIN)
10X1X10

Composition

Vitamin E (Natural) 400 IU + Wheat Germ Oil 100mg + Omega 3 Fatty Acids 30mg

Indications & Uses

Ulcerative colitis, Metabolic Syndrome, Rheumatoid Arthritis, Type-2 Diabetes, Cardiovascular Diseases

LYCOZIDE

CAPSULES (SOFT GELATIN)
10X1X10

Composition

Each SG Contains Lycopene 6% 2000 IU + Vitamin A 2500 IU + Vitamin E Acetate 10 IU + Vitamin C 50 mg + Zinc sulphate Monohydrate 27.45mg + Selenium Dioxide 70mcg

Indications & Uses

Idiopathic Male Infertility, Pre-eclampsia, Prostate Cancer, Cardiovascular Diseases, Diabetes Mellitus

DENUM 4G

CAPSULES (SOFT GELATIN)
10X1X10

Composition

Omega 3 Fatty Acid + Ginseng Extract + Ginkgo Bilaba Extract + Grape Seed Extract + Ginseng Extract + Multimineral + Multivitamin + Antioxidants + Trace Elements

Indications & Uses

Tiredness, Stress, Feeling of Weakness, Vitality Deficiency

DENUM G

CAPSULES (SOFT GELATIN)
10X1X11

Composition

Ginseng + Multivitamin + Multimineral

Indications & Uses

Tiredness, Stress, Feeling of Weakness, Vitality Deficiency

SPERIXIME – 200 LB

TABLETS (Alu-Alu)

20X10

Composition

Cefixime 200mg + Lactic Acid Bacilus 2.5 billion spores

Indications & Uses

Otitis Media, Pharyngitis & Tonsillitis, Uncomplicated Urinary Tract Infections, Acute Exacerbations of Chronic Bronchitis, Enteric Fever

SPERIXIME-CV 325

TABLETS (Alu-Alu)
10X1X6

Composition

Cefixime 200mg + Potassium Clavulanate 125mg

Indications & Uses

Respiratory Tract Infections, Urinary Tract Infections, Skin & Skin Structure Infections

SPERACLAV-625

TABLETS (Alu-Alu)
10X1X6

Composition

Amoxycillin 500mg + Potassium Clavulanate 125mg

Indications & Uses

Respiratory Tract Infections, Community Acquired Pneumonia, Gynaecological Infections, Acute Exacerbations of Chronic Bronchitis, Skin and Soft Tissue Infections

SPEROF-O

TABLETS (Blister)
20X10

Composition

Ofloxacin 200mg + Ornidazole 500mg

Indications & Uses

Surgical ions, Diarrheas of Mixed Etiology, Gynaecological Infections, Orofacial and Dental Infections

VEXACIN

TABLETS
10X10

Composition

Levofloxacin 500mg

Indications & Uses

Acute Bacterial Sinusitis, Acute Bacterial Exacerbations of Chronic Bronchitis, Skin & Skin Structure Infections, Chronic Bacterial Prostatitis, Urinary Tract Infections

SPERIXIME-O

TABLETS (Alu-Alu)
10X1X10

Composition

Cefixime 200mg + Ofloxacin 200mg

Indications & Uses

Community Acquired Pneumonia, Multiple Drug Resistant-TB, Typhoid

SPEROXIME-200

TABLETS (Alu-Alu)
10X1X6

Composition

Cefpodoxime Proxetil 200mg

Indications & Uses

Pharyngitis, CAP, Tonsilitis

SPERACLAV-1.2

INJECTIONS
1.2g

Composition

Amoxycillin 1000mg + Potassium Clavulanate 200mg + WFI

Indications & Uses

Community Acquired Pneumonia, Gynaecological Infections, Upper Respiratory Tract Infections, Skin and Soft Tissue Infections, Urinary Tract Infections, Acute Exacerbations of Chronic Bronchitis

SPERBACT-SB 1.5

INJECTIONS
1.5g

Composition

Ceftriaxone 1000mg + Sulbactam 500mg + WFI

Indications & Uses

Gynaecological Infections, Lower Respiratory Tract Infections, Intra-abdominal Infections with Aerobic Organisms, Surgical Prophylaxis

SPERBACT-TZ 1.125

INJECTIONS
1.125gm

Composition

Ceftriaxone 1000mg + Tazobactam 500 mg + WFI

Indications & Uses

Bone & Joint Infections, Intra-abdominal Infections, Bacterial Meningitis, Pre-operative Surgical Prophylaxis

SPERLIV

INJECTIONS
1gm

Composition

Meropenem 1gm + WFI

Indications & Uses

Complicated Intra-abdominal Infection (cIAI), Complicated Skin & Skin Structure Infections (cSSSI), Bacterial Meningitis, Noscocomial Pneumonia

SPIPER-Z 4.5

INJECTIONS
4.5gm

Composition

Piperacillin 4000mg + Tazobactam 500mg + WFI

Indications & Uses

Intra-abdominal Infections, Complicated Urinary Tract Infections, Febrile Neutropenia, Lower Respiratory Tract Infections

SPERBACT-C

INJECTIONS
1.5gm

Composition

Cefaperazone 1000mg + Sulbactam 500mg +WFI

Indications & Uses

Peritonitis, Bacterial Simusitis, Cholecystitis, Meningitis

BROXTAR

SYRUP
100ml

Composition

Ambroxol HCI 15mg + Guaiphensin 50mg + Terbutaline Sulphate 1.5mg + Mentholated Base/5ml

Indications & Uses

Bronchitis, Productive Cough, Emphysema, Bronchial Asthma

BROXTAR-BR

SYRUP

100ml

Composition

Terbutaline Sulphate 1.25mg + Bromhexine HCI 4mg + Guaiphenesin 50mg + Methalated Base/5ml

Indications & Uses

Acute Cough, Abnormal Mucus Secretion, Productive Cough

THROMET

SYRUP
100ml

Composition

Dextromethorphan Hydrobromide 10mg + Phenylpherine 5 mg + Cetrizine 5mg + Mentholated Base/5ml

Indications & Uses

Commom Cold and Flu, Nasal Congestion, Sore Throat

IRIDIE-M

TABLETS (Alu-Alu)
20X10

Composition

Levocetirizine 5mg + Montelukast 10mg

Indications & Uses

Allergic Rhinitis, Nasal Congestion, Asthma

IRIDIE

TABLETS (Alu-Alu)
20X11

Composition

Levocetirizine 5mg

Indications & Uses

Chronic Idiopathic Urticaria (CIU), Seasonal Allergic Rhinitis (SAR), Perennial Allergic Rhinitis (PAR)

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