Knowledge

Truncation

Source 📝

217: 377: 240: 295: 275: 132: 97: 140: 303: 222:
However, for negative numbers truncation does not round in the same direction as the floor function: truncation always rounds toward zero, the
493: 446: 225: 451: 280: 245: 102: 67: 528: 55: 20: 456: 485: 478: 212:{\displaystyle \operatorname {trunc} (x,n)={\frac {\lfloor 10^{n}\cdot x\rfloor }{10^{n}}}.} 441: 134:, the number of elements to be kept behind the decimal point, the truncated value of x is 8: 372:{\displaystyle \operatorname {trunc} (x,n)={\frac {\lceil 10^{n}\cdot x\rceil }{10^{n}}}} 512: 489: 429: 396:; it is truncated to zero decimal digits because integers cannot store non-integer 31: 389: 39: 61: 522: 43: 397: 27: 16:
In mathematics, limiting the number of digits right of the decimal point
409: 393: 388:
With computers, truncation can occur when a decimal number is
242:
function rounds towards negative infinity. For a given number
60:
Truncation of positive real numbers can be done using the
428:
or less. Polynomial truncations arise in the study of
306: 283: 248: 228: 143: 105: 70: 477: 371: 289: 269: 234: 211: 126: 91: 520: 49: 412:. In this case, the truncation of a polynomial 515:that visualizes errors due to finite precision 408:An analogue of truncation can be applied to 353: 334: 190: 171: 420:can be defined as the sum of all terms of 257: 114: 79: 383: 521: 475: 235:{\displaystyle \operatorname {floor} } 290:{\displaystyle \operatorname {ceil} } 270:{\displaystyle x\in \mathbb {R} _{-}} 127:{\displaystyle n\in \mathbb {N} _{0}} 92:{\displaystyle x\in \mathbb {R} _{+}} 13: 14: 540: 506: 447:Quantization (signal processing) 469: 325: 313: 162: 150: 1: 462: 403: 50:Truncation and floor function 452:Precision (computer science) 7: 435: 56:Floor and ceiling functions 21:Truncation (disambiguation) 10: 545: 53: 38:is limiting the number of 18: 484:(4th ed.). p.  476:Spivak, Michael (2008). 457:Truncation (statistics) 373: 291: 271: 236: 213: 128: 93: 374: 292: 272: 237: 214: 129: 94: 442:Arithmetic precision 384:Causes of truncation 304: 281: 246: 226: 141: 103: 99:to be truncated and 68: 19:For other uses, see 529:Numerical analysis 430:Taylor polynomials 369: 287: 267: 232: 209: 124: 89: 513:Wall paper applet 495:978-0-914098-91-1 367: 204: 64:. Given a number 536: 500: 499: 483: 473: 378: 376: 375: 370: 368: 366: 365: 356: 346: 345: 332: 297:is used instead 296: 294: 293: 288: 276: 274: 273: 268: 266: 265: 260: 241: 239: 238: 233: 218: 216: 215: 210: 205: 203: 202: 193: 183: 182: 169: 133: 131: 130: 125: 123: 122: 117: 98: 96: 95: 90: 88: 87: 82: 32:computer science 544: 543: 539: 538: 537: 535: 534: 533: 519: 518: 509: 504: 503: 496: 474: 470: 465: 438: 432:, for example. 406: 386: 361: 357: 341: 337: 333: 331: 305: 302: 301: 282: 279: 278: 277:, the function 261: 256: 255: 247: 244: 243: 227: 224: 223: 198: 194: 178: 174: 170: 168: 142: 139: 138: 118: 113: 112: 104: 101: 100: 83: 78: 77: 69: 66: 65: 58: 52: 24: 17: 12: 11: 5: 542: 532: 531: 517: 516: 508: 507:External links 505: 502: 501: 494: 467: 466: 464: 461: 460: 459: 454: 449: 444: 437: 434: 405: 402: 385: 382: 381: 380: 364: 360: 355: 352: 349: 344: 340: 336: 330: 327: 324: 321: 318: 315: 312: 309: 286: 264: 259: 254: 251: 231: 220: 219: 208: 201: 197: 192: 189: 186: 181: 177: 173: 167: 164: 161: 158: 155: 152: 149: 146: 121: 116: 111: 108: 86: 81: 76: 73: 62:floor function 54:Main article: 51: 48: 15: 9: 6: 4: 3: 2: 541: 530: 527: 526: 524: 514: 511: 510: 497: 491: 487: 482: 481: 472: 468: 458: 455: 453: 450: 448: 445: 443: 440: 439: 433: 431: 427: 423: 419: 415: 411: 401: 399: 395: 391: 362: 358: 350: 347: 342: 338: 328: 322: 319: 316: 310: 307: 300: 299: 298: 284: 262: 252: 249: 229: 206: 199: 195: 187: 184: 179: 175: 165: 159: 156: 153: 147: 144: 137: 136: 135: 119: 109: 106: 84: 74: 71: 63: 57: 47: 45: 44:decimal point 42:right of the 41: 37: 33: 29: 22: 479: 471: 425: 421: 417: 413: 407: 398:real numbers 387: 221: 59: 35: 25: 410:polynomials 28:mathematics 463:References 424:of degree 416:to degree 404:In algebra 36:truncation 354:⌉ 348:⋅ 335:⌈ 311:⁡ 263:− 253:∈ 191:⌋ 185:⋅ 172:⌊ 148:⁡ 110:∈ 75:∈ 523:Category 480:Calculus 436:See also 390:typecast 394:integer 492:  392:as an 40:digits 308:trunc 230:floor 145:trunc 490:ISBN 285:ceil 30:and 486:434 26:In 525:: 488:. 400:. 359:10 339:10 196:10 176:10 46:. 34:, 498:. 426:n 422:P 418:n 414:P 379:. 363:n 351:x 343:n 329:= 326:) 323:n 320:, 317:x 314:( 258:R 250:x 207:. 200:n 188:x 180:n 166:= 163:) 160:n 157:, 154:x 151:( 120:0 115:N 107:n 85:+ 80:R 72:x 23:.

Index

Truncation (disambiguation)
mathematics
computer science
digits
decimal point
Floor and ceiling functions
floor function
typecast
integer
real numbers
polynomials
Taylor polynomials
Arithmetic precision
Quantization (signal processing)
Precision (computer science)
Truncation (statistics)
Calculus
434
ISBN
978-0-914098-91-1
Wall paper applet
Category
Numerical analysis

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.