This is the formula for research cost for v1.21f . The figures given by it are 100% correct, no more errors or separate rounding formulae ! [dance]
The research cost formula for v1.29f can be found here :
http://forums.civfanatics.com/showthread.php?s=&threadid=29485
Research cost = MM*COST/10 - UP{MM/100 * UP[COST*10N/DOWN(CL*1.5)]} - Research done so far
Research cost and research done so far are in gold.
UP() means round up the figure inside the brackets.
DOWN() means round down the figure inside the brackets.
MM = map modifier =
Tiny 160
Small 200
Standard 240
Large 320
Huge 400
COST = technology cost as specified in the editor.
N = number of civs on the diplomacy screen that have discovered the tech.
CL = number of civs left in the game
The research cost formula for v1.29f can be found here :
http://forums.civfanatics.com/showthread.php?s=&threadid=29485
Research cost = MM*COST/10 - UP{MM/100 * UP[COST*10N/DOWN(CL*1.5)]} - Research done so far
Research cost and research done so far are in gold.
UP() means round up the figure inside the brackets.
DOWN() means round down the figure inside the brackets.
MM = map modifier =
Tiny 160
Small 200
Standard 240
Large 320
Huge 400
COST = technology cost as specified in the editor.
N = number of civs on the diplomacy screen that have discovered the tech.
CL = number of civs left in the game