CALC_MATERIALS_SMAIL (function)
两变都小于305的材料（单位CM）
- Type: FUNCTION
-
Returns:
decimal(18,6) - Deterministic: NO
- SQL data access: CONTAINS SQL
Parameters
| # | Mode | Name | Type |
|---|---|---|---|
| 1 | IN | dQty |
decimal(18,6) |
| 2 | IN | dWidth |
decimal(18,6) |
| 3 | IN | dLength |
decimal(18,6) |
Body
Body is not pre-cached. To inspect: mysql --defaults-file=~/.my.cnf -e 'SHOW CREATE FUNCTIONCALCMATERIALS_SMAIL'._
Narrative
Business context: Material yield estimator for cuts taken from a stock board capped at 305 cm per side (board dimensions in cm). Header comment is 两变都小于305的材料（单位CM） ("both sides under 305, unit CM"). Counts how many 305-cm stock boards a batch of dQty pieces of size dWidth × dLength will consume, including offcut reuse.
What it does: sorts the long/short side, peels off any "whole-board" multiples when a side exceeds 305, then loops the remaining pieces along a 305-cm running cutline and uses a JSON list to track usable offcuts (料头). Returns the total board count. Does not read or write any table — pure arithmetic.
Invocation: Status: appears orphaned. No caller found in any channel (form-master sSqlStr, gdsmodule hooks, other routines, exhaustive xly-src grep, dynamic-dispatch search) — candidate for maintainer audit.