Function nonpositive

packages/zod/src/v4/classic/schemas.ts:1039–1041

(params)

      return this.check(checks.lt(0, params));
    },
    nonpositive(params) {
      return this.check(checks.lte(0, params));
    },
    multipleOf(value, params) {
      return this.check(checks.multipleOf(value, params));
    },