-0.000 806 264 623 585 362 514 063 654 156 856 186 Converted to 64 Bit Double Precision IEEE 754 Binary Floating Point Representation Standard

Convert decimal -0.000 806 264 623 585 362 514 063 654 156 856 186(10) to 64 bit double precision IEEE 754 binary floating point representation standard (1 bit for sign, 11 bits for exponent, 52 bits for mantissa)

What are the steps to convert decimal number
-0.000 806 264 623 585 362 514 063 654 156 856 186(10) to 64 bit double precision IEEE 754 binary floating point representation (1 bit for sign, 11 bits for exponent, 52 bits for mantissa)

1. Start with the positive version of the number:

|-0.000 806 264 623 585 362 514 063 654 156 856 186| = 0.000 806 264 623 585 362 514 063 654 156 856 186


2. First, convert to binary (in base 2) the integer part: 0.
Divide the number repeatedly by 2.

Keep track of each remainder.

We stop when we get a quotient that is equal to zero.


  • division = quotient + remainder;
  • 0 ÷ 2 = 0 + 0;

3. Construct the base 2 representation of the integer part of the number.

Take all the remainders starting from the bottom of the list constructed above.

0(10) =

0(2)


4. Convert to binary (base 2) the fractional part: 0.000 806 264 623 585 362 514 063 654 156 856 186.

Multiply it repeatedly by 2.

Keep track of each integer part of the results.

Stop when we get a fractional part that is equal to zero.


  • #) multiplying = integer + fractional part;
  • 1) 0.000 806 264 623 585 362 514 063 654 156 856 186 × 2 = 0 + 0.001 612 529 247 170 725 028 127 308 313 712 372;
  • 2) 0.001 612 529 247 170 725 028 127 308 313 712 372 × 2 = 0 + 0.003 225 058 494 341 450 056 254 616 627 424 744;
  • 3) 0.003 225 058 494 341 450 056 254 616 627 424 744 × 2 = 0 + 0.006 450 116 988 682 900 112 509 233 254 849 488;
  • 4) 0.006 450 116 988 682 900 112 509 233 254 849 488 × 2 = 0 + 0.012 900 233 977 365 800 225 018 466 509 698 976;
  • 5) 0.012 900 233 977 365 800 225 018 466 509 698 976 × 2 = 0 + 0.025 800 467 954 731 600 450 036 933 019 397 952;
  • 6) 0.025 800 467 954 731 600 450 036 933 019 397 952 × 2 = 0 + 0.051 600 935 909 463 200 900 073 866 038 795 904;
  • 7) 0.051 600 935 909 463 200 900 073 866 038 795 904 × 2 = 0 + 0.103 201 871 818 926 401 800 147 732 077 591 808;
  • 8) 0.103 201 871 818 926 401 800 147 732 077 591 808 × 2 = 0 + 0.206 403 743 637 852 803 600 295 464 155 183 616;
  • 9) 0.206 403 743 637 852 803 600 295 464 155 183 616 × 2 = 0 + 0.412 807 487 275 705 607 200 590 928 310 367 232;
  • 10) 0.412 807 487 275 705 607 200 590 928 310 367 232 × 2 = 0 + 0.825 614 974 551 411 214 401 181 856 620 734 464;
  • 11) 0.825 614 974 551 411 214 401 181 856 620 734 464 × 2 = 1 + 0.651 229 949 102 822 428 802 363 713 241 468 928;
  • 12) 0.651 229 949 102 822 428 802 363 713 241 468 928 × 2 = 1 + 0.302 459 898 205 644 857 604 727 426 482 937 856;
  • 13) 0.302 459 898 205 644 857 604 727 426 482 937 856 × 2 = 0 + 0.604 919 796 411 289 715 209 454 852 965 875 712;
  • 14) 0.604 919 796 411 289 715 209 454 852 965 875 712 × 2 = 1 + 0.209 839 592 822 579 430 418 909 705 931 751 424;
  • 15) 0.209 839 592 822 579 430 418 909 705 931 751 424 × 2 = 0 + 0.419 679 185 645 158 860 837 819 411 863 502 848;
  • 16) 0.419 679 185 645 158 860 837 819 411 863 502 848 × 2 = 0 + 0.839 358 371 290 317 721 675 638 823 727 005 696;
  • 17) 0.839 358 371 290 317 721 675 638 823 727 005 696 × 2 = 1 + 0.678 716 742 580 635 443 351 277 647 454 011 392;
  • 18) 0.678 716 742 580 635 443 351 277 647 454 011 392 × 2 = 1 + 0.357 433 485 161 270 886 702 555 294 908 022 784;
  • 19) 0.357 433 485 161 270 886 702 555 294 908 022 784 × 2 = 0 + 0.714 866 970 322 541 773 405 110 589 816 045 568;
  • 20) 0.714 866 970 322 541 773 405 110 589 816 045 568 × 2 = 1 + 0.429 733 940 645 083 546 810 221 179 632 091 136;
  • 21) 0.429 733 940 645 083 546 810 221 179 632 091 136 × 2 = 0 + 0.859 467 881 290 167 093 620 442 359 264 182 272;
  • 22) 0.859 467 881 290 167 093 620 442 359 264 182 272 × 2 = 1 + 0.718 935 762 580 334 187 240 884 718 528 364 544;
  • 23) 0.718 935 762 580 334 187 240 884 718 528 364 544 × 2 = 1 + 0.437 871 525 160 668 374 481 769 437 056 729 088;
  • 24) 0.437 871 525 160 668 374 481 769 437 056 729 088 × 2 = 0 + 0.875 743 050 321 336 748 963 538 874 113 458 176;
  • 25) 0.875 743 050 321 336 748 963 538 874 113 458 176 × 2 = 1 + 0.751 486 100 642 673 497 927 077 748 226 916 352;
  • 26) 0.751 486 100 642 673 497 927 077 748 226 916 352 × 2 = 1 + 0.502 972 201 285 346 995 854 155 496 453 832 704;
  • 27) 0.502 972 201 285 346 995 854 155 496 453 832 704 × 2 = 1 + 0.005 944 402 570 693 991 708 310 992 907 665 408;
  • 28) 0.005 944 402 570 693 991 708 310 992 907 665 408 × 2 = 0 + 0.011 888 805 141 387 983 416 621 985 815 330 816;
  • 29) 0.011 888 805 141 387 983 416 621 985 815 330 816 × 2 = 0 + 0.023 777 610 282 775 966 833 243 971 630 661 632;
  • 30) 0.023 777 610 282 775 966 833 243 971 630 661 632 × 2 = 0 + 0.047 555 220 565 551 933 666 487 943 261 323 264;
  • 31) 0.047 555 220 565 551 933 666 487 943 261 323 264 × 2 = 0 + 0.095 110 441 131 103 867 332 975 886 522 646 528;
  • 32) 0.095 110 441 131 103 867 332 975 886 522 646 528 × 2 = 0 + 0.190 220 882 262 207 734 665 951 773 045 293 056;
  • 33) 0.190 220 882 262 207 734 665 951 773 045 293 056 × 2 = 0 + 0.380 441 764 524 415 469 331 903 546 090 586 112;
  • 34) 0.380 441 764 524 415 469 331 903 546 090 586 112 × 2 = 0 + 0.760 883 529 048 830 938 663 807 092 181 172 224;
  • 35) 0.760 883 529 048 830 938 663 807 092 181 172 224 × 2 = 1 + 0.521 767 058 097 661 877 327 614 184 362 344 448;
  • 36) 0.521 767 058 097 661 877 327 614 184 362 344 448 × 2 = 1 + 0.043 534 116 195 323 754 655 228 368 724 688 896;
  • 37) 0.043 534 116 195 323 754 655 228 368 724 688 896 × 2 = 0 + 0.087 068 232 390 647 509 310 456 737 449 377 792;
  • 38) 0.087 068 232 390 647 509 310 456 737 449 377 792 × 2 = 0 + 0.174 136 464 781 295 018 620 913 474 898 755 584;
  • 39) 0.174 136 464 781 295 018 620 913 474 898 755 584 × 2 = 0 + 0.348 272 929 562 590 037 241 826 949 797 511 168;
  • 40) 0.348 272 929 562 590 037 241 826 949 797 511 168 × 2 = 0 + 0.696 545 859 125 180 074 483 653 899 595 022 336;
  • 41) 0.696 545 859 125 180 074 483 653 899 595 022 336 × 2 = 1 + 0.393 091 718 250 360 148 967 307 799 190 044 672;
  • 42) 0.393 091 718 250 360 148 967 307 799 190 044 672 × 2 = 0 + 0.786 183 436 500 720 297 934 615 598 380 089 344;
  • 43) 0.786 183 436 500 720 297 934 615 598 380 089 344 × 2 = 1 + 0.572 366 873 001 440 595 869 231 196 760 178 688;
  • 44) 0.572 366 873 001 440 595 869 231 196 760 178 688 × 2 = 1 + 0.144 733 746 002 881 191 738 462 393 520 357 376;
  • 45) 0.144 733 746 002 881 191 738 462 393 520 357 376 × 2 = 0 + 0.289 467 492 005 762 383 476 924 787 040 714 752;
  • 46) 0.289 467 492 005 762 383 476 924 787 040 714 752 × 2 = 0 + 0.578 934 984 011 524 766 953 849 574 081 429 504;
  • 47) 0.578 934 984 011 524 766 953 849 574 081 429 504 × 2 = 1 + 0.157 869 968 023 049 533 907 699 148 162 859 008;
  • 48) 0.157 869 968 023 049 533 907 699 148 162 859 008 × 2 = 0 + 0.315 739 936 046 099 067 815 398 296 325 718 016;
  • 49) 0.315 739 936 046 099 067 815 398 296 325 718 016 × 2 = 0 + 0.631 479 872 092 198 135 630 796 592 651 436 032;
  • 50) 0.631 479 872 092 198 135 630 796 592 651 436 032 × 2 = 1 + 0.262 959 744 184 396 271 261 593 185 302 872 064;
  • 51) 0.262 959 744 184 396 271 261 593 185 302 872 064 × 2 = 0 + 0.525 919 488 368 792 542 523 186 370 605 744 128;
  • 52) 0.525 919 488 368 792 542 523 186 370 605 744 128 × 2 = 1 + 0.051 838 976 737 585 085 046 372 741 211 488 256;
  • 53) 0.051 838 976 737 585 085 046 372 741 211 488 256 × 2 = 0 + 0.103 677 953 475 170 170 092 745 482 422 976 512;
  • 54) 0.103 677 953 475 170 170 092 745 482 422 976 512 × 2 = 0 + 0.207 355 906 950 340 340 185 490 964 845 953 024;
  • 55) 0.207 355 906 950 340 340 185 490 964 845 953 024 × 2 = 0 + 0.414 711 813 900 680 680 370 981 929 691 906 048;
  • 56) 0.414 711 813 900 680 680 370 981 929 691 906 048 × 2 = 0 + 0.829 423 627 801 361 360 741 963 859 383 812 096;
  • 57) 0.829 423 627 801 361 360 741 963 859 383 812 096 × 2 = 1 + 0.658 847 255 602 722 721 483 927 718 767 624 192;
  • 58) 0.658 847 255 602 722 721 483 927 718 767 624 192 × 2 = 1 + 0.317 694 511 205 445 442 967 855 437 535 248 384;
  • 59) 0.317 694 511 205 445 442 967 855 437 535 248 384 × 2 = 0 + 0.635 389 022 410 890 885 935 710 875 070 496 768;
  • 60) 0.635 389 022 410 890 885 935 710 875 070 496 768 × 2 = 1 + 0.270 778 044 821 781 771 871 421 750 140 993 536;
  • 61) 0.270 778 044 821 781 771 871 421 750 140 993 536 × 2 = 0 + 0.541 556 089 643 563 543 742 843 500 281 987 072;
  • 62) 0.541 556 089 643 563 543 742 843 500 281 987 072 × 2 = 1 + 0.083 112 179 287 127 087 485 687 000 563 974 144;
  • 63) 0.083 112 179 287 127 087 485 687 000 563 974 144 × 2 = 0 + 0.166 224 358 574 254 174 971 374 001 127 948 288;

We didn't get any fractional part that was equal to zero. But we had enough iterations (over Mantissa limit) and at least one integer that was different from zero => FULL STOP (Losing precision - the converted number we get in the end will be just a very good approximation of the initial one).


5. Construct the base 2 representation of the fractional part of the number.

Take all the integer parts of the multiplying operations, starting from the top of the constructed list above:


0.000 806 264 623 585 362 514 063 654 156 856 186(10) =

0.0000 0000 0011 0100 1101 0110 1110 0000 0011 0000 1011 0010 0101 0000 1101 010(2)

6. Positive number before normalization:

0.000 806 264 623 585 362 514 063 654 156 856 186(10) =

0.0000 0000 0011 0100 1101 0110 1110 0000 0011 0000 1011 0010 0101 0000 1101 010(2)

7. Normalize the binary representation of the number.

Shift the decimal mark 11 positions to the right, so that only one non zero digit remains to the left of it:


0.000 806 264 623 585 362 514 063 654 156 856 186(10) =

0.0000 0000 0011 0100 1101 0110 1110 0000 0011 0000 1011 0010 0101 0000 1101 010(2) =

0.0000 0000 0011 0100 1101 0110 1110 0000 0011 0000 1011 0010 0101 0000 1101 010(2) × 20 =

1.1010 0110 1011 0111 0000 0001 1000 0101 1001 0010 1000 0110 1010(2) × 2-11


8. Up to this moment, there are the following elements that would feed into the 64 bit double precision IEEE 754 binary floating point representation:

Sign 1 (a negative number)

Exponent (unadjusted): -11

Mantissa (not normalized):
1.1010 0110 1011 0111 0000 0001 1000 0101 1001 0010 1000 0110 1010


9. Adjust the exponent.

Use the 11 bit excess/bias notation:


Exponent (adjusted) =

Exponent (unadjusted) + 2(11-1) - 1 =

-11 + 2(11-1) - 1 =

(-11 + 1 023)(10) =

1 012(10)


10. Convert the adjusted exponent from the decimal (base 10) to 11 bit binary.

Use the same technique of repeatedly dividing by 2:


  • division = quotient + remainder;
  • 1 012 ÷ 2 = 506 + 0;
  • 506 ÷ 2 = 253 + 0;
  • 253 ÷ 2 = 126 + 1;
  • 126 ÷ 2 = 63 + 0;
  • 63 ÷ 2 = 31 + 1;
  • 31 ÷ 2 = 15 + 1;
  • 15 ÷ 2 = 7 + 1;
  • 7 ÷ 2 = 3 + 1;
  • 3 ÷ 2 = 1 + 1;
  • 1 ÷ 2 = 0 + 1;

11. Construct the base 2 representation of the adjusted exponent.

Take all the remainders starting from the bottom of the list constructed above.


Exponent (adjusted) =

1012(10) =

011 1111 0100(2)


12. Normalize the mantissa.

a) Remove the leading (the leftmost) bit, since it's allways 1, and the decimal point, if the case.

b) Adjust its length to 52 bits, only if necessary (not the case here).


Mantissa (normalized) =

1. 1010 0110 1011 0111 0000 0001 1000 0101 1001 0010 1000 0110 1010 =

1010 0110 1011 0111 0000 0001 1000 0101 1001 0010 1000 0110 1010


13. The three elements that make up the number's 64 bit double precision IEEE 754 binary floating point representation:

Sign (1 bit) =
1 (a negative number)

Exponent (11 bits) =
011 1111 0100

Mantissa (52 bits) =
1010 0110 1011 0111 0000 0001 1000 0101 1001 0010 1000 0110 1010


Decimal number -0.000 806 264 623 585 362 514 063 654 156 856 186 converted to 64 bit double precision IEEE 754 binary floating point representation:

1 - 011 1111 0100 - 1010 0110 1011 0111 0000 0001 1000 0101 1001 0010 1000 0110 1010

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How to convert numbers from the decimal system (base ten) to 64 bit double precision IEEE 754 binary floating point standard

Follow the steps below to convert a base 10 decimal number to 64 bit double precision IEEE 754 binary floating point:

  • 1. If the number to be converted is negative, start with its the positive version.
  • 2. First convert the integer part. Divide repeatedly by 2 the positive representation of the integer number that is to be converted to binary, until we get a quotient that is equal to zero, keeping track of each remainder.
  • 3. Construct the base 2 representation of the positive integer part of the number, by taking all the remainders from the previous operations, starting from the bottom of the list constructed above. Thus, the last remainder of the divisions becomes the first symbol (the leftmost) of the base two number, while the first remainder becomes the last symbol (the rightmost).
  • 4. Then convert the fractional part. Multiply the number repeatedly by 2, until we get a fractional part that is equal to zero, keeping track of each integer part of the results.
  • 5. Construct the base 2 representation of the fractional part of the number, by taking all the integer parts of the multiplying operations, starting from the top of the list constructed above (they should appear in the binary representation, from left to right, in the order they have been calculated).
  • 6. Normalize the binary representation of the number, shifting the decimal mark (the decimal point) "n" positions either to the left, or to the right, so that only one non zero digit remains to the left of the decimal mark.
  • 7. Adjust the exponent in 11 bit excess/bias notation and then convert it from decimal (base 10) to 11 bit binary, by using the same technique of repeatedly dividing by 2, as shown above:
    Exponent (adjusted) = Exponent (unadjusted) + 2(11-1) - 1
  • 8. Normalize mantissa, remove the leading (leftmost) bit, since it's allways '1' (and the decimal mark, if the case) and adjust its length to 52 bits, either by removing the excess bits from the right (losing precision...) or by adding extra bits set on '0' to the right.
  • 9. Sign (it takes 1 bit) is either 1 for a negative or 0 for a positive number.

Example: convert the negative number -31.640 215 from the decimal system (base ten) to 64 bit double precision IEEE 754 binary floating point:

  • 1. Start with the positive version of the number:

    |-31.640 215| = 31.640 215

  • 2. First convert the integer part, 31. Divide it repeatedly by 2, keeping track of each remainder, until we get a quotient that is equal to zero:
    • division = quotient + remainder;
    • 31 ÷ 2 = 15 + 1;
    • 15 ÷ 2 = 7 + 1;
    • 7 ÷ 2 = 3 + 1;
    • 3 ÷ 2 = 1 + 1;
    • 1 ÷ 2 = 0 + 1;
    • We have encountered a quotient that is ZERO => FULL STOP
  • 3. Construct the base 2 representation of the integer part of the number by taking all the remainders of the previous dividing operations, starting from the bottom of the list constructed above:

    31(10) = 1 1111(2)

  • 4. Then, convert the fractional part, 0.640 215. Multiply repeatedly by 2, keeping track of each integer part of the results, until we get a fractional part that is equal to zero:
    • #) multiplying = integer + fractional part;
    • 1) 0.640 215 × 2 = 1 + 0.280 43;
    • 2) 0.280 43 × 2 = 0 + 0.560 86;
    • 3) 0.560 86 × 2 = 1 + 0.121 72;
    • 4) 0.121 72 × 2 = 0 + 0.243 44;
    • 5) 0.243 44 × 2 = 0 + 0.486 88;
    • 6) 0.486 88 × 2 = 0 + 0.973 76;
    • 7) 0.973 76 × 2 = 1 + 0.947 52;
    • 8) 0.947 52 × 2 = 1 + 0.895 04;
    • 9) 0.895 04 × 2 = 1 + 0.790 08;
    • 10) 0.790 08 × 2 = 1 + 0.580 16;
    • 11) 0.580 16 × 2 = 1 + 0.160 32;
    • 12) 0.160 32 × 2 = 0 + 0.320 64;
    • 13) 0.320 64 × 2 = 0 + 0.641 28;
    • 14) 0.641 28 × 2 = 1 + 0.282 56;
    • 15) 0.282 56 × 2 = 0 + 0.565 12;
    • 16) 0.565 12 × 2 = 1 + 0.130 24;
    • 17) 0.130 24 × 2 = 0 + 0.260 48;
    • 18) 0.260 48 × 2 = 0 + 0.520 96;
    • 19) 0.520 96 × 2 = 1 + 0.041 92;
    • 20) 0.041 92 × 2 = 0 + 0.083 84;
    • 21) 0.083 84 × 2 = 0 + 0.167 68;
    • 22) 0.167 68 × 2 = 0 + 0.335 36;
    • 23) 0.335 36 × 2 = 0 + 0.670 72;
    • 24) 0.670 72 × 2 = 1 + 0.341 44;
    • 25) 0.341 44 × 2 = 0 + 0.682 88;
    • 26) 0.682 88 × 2 = 1 + 0.365 76;
    • 27) 0.365 76 × 2 = 0 + 0.731 52;
    • 28) 0.731 52 × 2 = 1 + 0.463 04;
    • 29) 0.463 04 × 2 = 0 + 0.926 08;
    • 30) 0.926 08 × 2 = 1 + 0.852 16;
    • 31) 0.852 16 × 2 = 1 + 0.704 32;
    • 32) 0.704 32 × 2 = 1 + 0.408 64;
    • 33) 0.408 64 × 2 = 0 + 0.817 28;
    • 34) 0.817 28 × 2 = 1 + 0.634 56;
    • 35) 0.634 56 × 2 = 1 + 0.269 12;
    • 36) 0.269 12 × 2 = 0 + 0.538 24;
    • 37) 0.538 24 × 2 = 1 + 0.076 48;
    • 38) 0.076 48 × 2 = 0 + 0.152 96;
    • 39) 0.152 96 × 2 = 0 + 0.305 92;
    • 40) 0.305 92 × 2 = 0 + 0.611 84;
    • 41) 0.611 84 × 2 = 1 + 0.223 68;
    • 42) 0.223 68 × 2 = 0 + 0.447 36;
    • 43) 0.447 36 × 2 = 0 + 0.894 72;
    • 44) 0.894 72 × 2 = 1 + 0.789 44;
    • 45) 0.789 44 × 2 = 1 + 0.578 88;
    • 46) 0.578 88 × 2 = 1 + 0.157 76;
    • 47) 0.157 76 × 2 = 0 + 0.315 52;
    • 48) 0.315 52 × 2 = 0 + 0.631 04;
    • 49) 0.631 04 × 2 = 1 + 0.262 08;
    • 50) 0.262 08 × 2 = 0 + 0.524 16;
    • 51) 0.524 16 × 2 = 1 + 0.048 32;
    • 52) 0.048 32 × 2 = 0 + 0.096 64;
    • 53) 0.096 64 × 2 = 0 + 0.193 28;
    • We didn't get any fractional part that was equal to zero. But we had enough iterations (over Mantissa limit = 52) and at least one integer part that was different from zero => FULL STOP (losing precision...).
  • 5. Construct the base 2 representation of the fractional part of the number, by taking all the integer parts of the previous multiplying operations, starting from the top of the constructed list above:

    0.640 215(10) = 0.1010 0011 1110 0101 0010 0001 0101 0111 0110 1000 1001 1100 1010 0(2)

  • 6. Summarizing - the positive number before normalization:

    31.640 215(10) = 1 1111.1010 0011 1110 0101 0010 0001 0101 0111 0110 1000 1001 1100 1010 0(2)

  • 7. Normalize the binary representation of the number, shifting the decimal mark 4 positions to the left so that only one non-zero digit stays to the left of the decimal mark:

    31.640 215(10) =
    1 1111.1010 0011 1110 0101 0010 0001 0101 0111 0110 1000 1001 1100 1010 0(2) =
    1 1111.1010 0011 1110 0101 0010 0001 0101 0111 0110 1000 1001 1100 1010 0(2) × 20 =
    1.1111 1010 0011 1110 0101 0010 0001 0101 0111 0110 1000 1001 1100 1010 0(2) × 24

  • 8. Up to this moment, there are the following elements that would feed into the 64 bit double precision IEEE 754 binary floating point representation:

    Sign: 1 (a negative number)

    Exponent (unadjusted): 4

    Mantissa (not-normalized): 1.1111 1010 0011 1110 0101 0010 0001 0101 0111 0110 1000 1001 1100 1010 0

  • 9. Adjust the exponent in 11 bit excess/bias notation and then convert it from decimal (base 10) to 11 bit binary (base 2), by using the same technique of repeatedly dividing it by 2, as shown above:

    Exponent (adjusted) = Exponent (unadjusted) + 2(11-1) - 1 = (4 + 1023)(10) = 1027(10) =
    100 0000 0011(2)

  • 10. Normalize mantissa, remove the leading (leftmost) bit, since it's allways '1' (and the decimal sign) and adjust its length to 52 bits, by removing the excess bits, from the right (losing precision...):

    Mantissa (not-normalized): 1.1111 1010 0011 1110 0101 0010 0001 0101 0111 0110 1000 1001 1100 1010 0

    Mantissa (normalized): 1111 1010 0011 1110 0101 0010 0001 0101 0111 0110 1000 1001 1100

  • Conclusion:

    Sign (1 bit) = 1 (a negative number)

    Exponent (8 bits) = 100 0000 0011

    Mantissa (52 bits) = 1111 1010 0011 1110 0101 0010 0001 0101 0111 0110 1000 1001 1100

  • Number -31.640 215, converted from decimal system (base 10) to 64 bit double precision IEEE 754 binary floating point =
    1 - 100 0000 0011 - 1111 1010 0011 1110 0101 0010 0001 0101 0111 0110 1000 1001 1100