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Math

CMathClass is a global singleton implementing the JavaScript Math object for XAP scripts. Exposes standard math functions (sin, cos, floor, etc.) and constants (PI, E, etc.). Backed by math_node.cpp in the active source tree.

Binary Analysis (4920-5960 retail XBE)

FND Table Strings

Function names found in the binary string table:

  • abs, acos, asin, atan, atan2
  • ceil, cos, exp, floor, log
  • max, min, pow, random, round
  • sin, sqrt, tan, itoa

Labeled Addresses

  • CMathClass_abs at 0x00032af0
  • CMathClass_floor at 0x000223e4
  • CMathClass_ceil at 0x000223c4
  • CMathClass_round at 0x00022418
  • CMathClass_random at 0x00022410
  • CMathClass_sqrt at 0x00022434
  • CMathClass_pow at 0x00022408
  • CMathClass_atan2 at 0x000223b8

Global Singleton

g_Math at 0x0001a508. Constructor populates JS Math constants. Not reference counted.

Observations

  • All math wrappers are thin CRT calls (fabsf, sinf, cosf, etc.)
  • atan2(y, x) passes args reversed to match JS convention
  • itoa converts int to Unicode string via CRT _itoa + Unicode()